AT90S8515_技术文档

Features

• AVR - High Performance and Low Power RISC Architecture

• 118 Powerful Instructions - Most Single Clock Cycle Execution

• 8K bytes of In-System Reprogrammable Flash

– SPI Serial Interface for Program Downloading

– Endurance: 1,000 Write/Erase Cycles

• 512 bytes EEPROM

– Endurance: 100,000 Write/Erase Cycles

• 512 bytes Internal SRAM

• 32 x 8 General Purpose Working Registers

• 32 Programmable I/O Lines

• Programmable Serial UART

8-Bit

• SPI Serial Interface

Microcontroller

with 8K bytes

In-System

Programmable

Flash

• V_CC: 2.7 - 6.0V

• Fully Static Operation

– 0 - 8 MHz 4.0 - 6.0V,

– 0 - 4 MHz 2.7 - 4.0V

• Up to 8 MIPS Throughput at 8 MHz

• One 8-Bit Timer/Counter with Separate Prescaler

• One 16-Bit Timer/Counter with Separate Prescaler

and Compare and Capture Modes

• Dual PWM

• External and Internal Interrupt Sources

• Programmable Watchdog Timer with On-Chip Oscillator

• On-Chip Analog Comparator

• Low Power Idle and Power Down Modes

• Programming Lock for Software Security

AT90S8515

Preliminary

Description

®

The AT90S8515 is a low-power CMOS 8-bit microcontroller based on the AVR

enhanced RISC architecture. By executing powerful instructions in a single clock

cycle, the AT90S8515 achieves throughputs approaching 1 MIPS per MHz allowing

the system designer to optimize power consumption versus processing speed.

The AVR core combines a rich instruction set with 32 general purpose working regis-

ters. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU),

allowing two independent registers to be accessed in one single instruction executed

in one clock cycle. The resulting architecture is more code efficient while achieving

throughputs up to ten times faster than conventional CISC microcontrollers.

(continued)

Pin Configurations

Rev. 0841DS–06/98

Note: This is a sumary document. For the complete

76 page document, please visit our Web site at

www.atmel.com or e-mail at literature@atmel.com

and request literature number 0841D.

1

Block Diagram

Figure 1. The AT90S8515 Block Diagram

The AT90S8515 provides the following features: 8K bytes

of In-System Programmable Flash, 512 bytes EEPROM,

512 bytes SRAM, 32 general purpose I/O lines, 32 general

purpose working registers, flexible timer/counters with

compare modes, internal and external interrupts, a pro-

grammable serial UART, programmable Watchdog Timer

with internal oscillator, an SPI serial port and two software

selectable power saving modes. The Idle Mode stops the

CPU while allowing the SRAM, timer/counters, SPI port

and interrupt system to continue functioning. The power

down mode saves the register contents but freezes the

oscillator, disabling all other chip functions until the next

interrupt or hardware reset.

The device is manufactured using Atmel’s high density

non-volatile memory technology. The on-chip in-system

programmable Flash allows the program memory to be

reprogrammed in-system through an SPI serial interface or

by a conventional nonvolatile memory programmer. By

combining an enhanced RISC 8-bit CPU with In-System

Programmable Flash on a monolithic chip, the Atmel

AT90S8515 is a powerful microcontroller that provides a

highly flexible and cost effective solution to many embed-

ded control applications.

The AT90S8515 AVR is supported with a full suite of pro-

gram and system development tools including: C compil-

ers, macro assemblers, program debugger/simulators, in-

circuit emulators, and evaluation kits.

AT90S8515

2

AT90S8515

ALE

Pin Descriptions

ALE is the Address Latch Enable used when the External

Memory is enabled. The ALE strobe is used to latch the

low-order address (8 bits) into an address latch during the

first access cycle, and the AD0-7 pins are used for data

during the second access cycle.

V_CC

Supply voltage

GND

Ground

Port A (PA7..PA0)

Crystal Oscillator

Port A is an 8-bit bidirectional I/O port. Port pins can pro-

vide internal pull-up resistors (selected for each bit). The

Port A output buffers can sink 20mA and can drive LED dis-

plays directly. When pins PA0 to PA7 are used as inputs

and are externally pulled low, they will source current if the

internal pull-up resistors are activated.

XTAL1 and XTAL2 are input and output, respectively, of an

inverting amplifier which can be configured for use as an

on-chip oscillator, as shown in Figure 2. Either a quartz

crystal or a ceramic resonator may be used. To drive the

device from an external clock source, XTAL2 should be left

unconnected while XTAL1 is driven as shown in Figure 3.

Port A serves as Multiplexed Address/Data input/output

when using external SRAM.

Figure 2. Oscillator Connections

Port B (PB7..PB0)

Port B is an 8-bit bidirectional I/O pins with internal pull-up

resistors. The Port B output buffers can sink 20 mA. As

inputs, Port B pins that are externally pulled low will source

current if the pull-up resistors are activated.

Port B also serves the functions of various special features

of the AT90S8515 as listed on page 46.

Port C (PC7..PC0)

Port C is an 8-bit bidirectional I/O port with internal pull-up

resistors. The Port C output buffers can sink 20 mA. As

inputs, Port C pins that are externally pulled low will source

current if the pull-up resistors are activated.

Port C also serves as Address output when using external

SRAM.

Figure 3. External Clock Drive Configuration

Port D (PD7..PD0)

Port D is an 8-bit bidirectional I/O port with internal pull-up

resistors. The Port D output buffers can sink 20 mA. As

inputs, Port D pins that are externally pulled low will source

current if the pull-up resistors are activated.

Port D also serves the functions of various special features

of the AT90S8515 as listed on page 52.

RESET

Reset input. A low on this pin for two machine cycles while

the oscillator is running resets the device.

XTAL1

Input to the inverting oscillator amplifier and input to the

internal clock operating circuit.

XTAL2

Output from the inverting oscillator amplifier

ICP

ICP is the input pin for the Timer/Counter1 Input Capture

function.

OC1B

OC1B is the output pin for the Timer/Counter1 Output

CompareB function

3

AT90S8515 Architectural Overview

The fast-access register file concept contains 32 x 8-bit

general purpose working registers with a single clock cycle

access time. This means that during one single clock cycle,

one ALU (Arithmetic Logic Unit) operation is executed. Two

operands are output from the register file, the operation is

executed, and the result is stored back in the register file -

in one clock cycle.

Six of the 32 registers can be used as three 16-bits indirect

address register pointers for Data Space addressing -

enabling efficient address calculations. One of the three

address pointers is also used as the address pointer for the

constant table look up function. These added function reg-

isters are the 16-bits X-register, Y-register and Z-register.

Figure 4. The AT90S8515 AVR Enhanced RISC Architecture

The ALU supports arithmetic and logic functions between

registers or between a constant and a register. Single reg-

ister operations are also executed in the ALU. Figure 4

shows the AT90S8515 AVR Enhanced RISC microcontrol-

ler architecture.

The AVR uses a Harvard architecture concept - with sepa-

rate memories and buses for program and data. The pro-

gram memory is executed with a two stage pipeline. While

one instruction is being executed, the next instruction is

pre-fetched from the program memory. This concept

enables instructions to be executed in every clock cycle.

The program memory is in-system programmable Flash

memory.

In addition to the register operation, the conventional mem-

ory addressing modes can be used on the register file as

well. This is enabled by the fact that the register file is

assigned the 32 lowermost Data Space addresses ($00 -

$1F), allowing them to be accessed as though they were

ordinary memory locations.

With the relative jump and call instructions, the whole 4K

address space is directly accessed. Most AVR instructions

have a single 16-bit word format. Every program memory

address contains a 16- or 32-bit instruction.

The I/O memory space contains 64 addresses for CPU

peripheral functions as Control Registers, Timer/Counters,

A/D-converters, and other I/O functions. The I/O Memory

can be accessed directly, or as the Data Space locations

following those of the register file, $20 - $5F.

During interrupts and subroutine calls, the return address

program counter (PC) is stored on the stack. The stack is

effectively allocated in the general data SRAM, and conse-

quently the stack size is only limited by the total SRAM size

and the usage of the SRAM. All user programs must initial-

AT90S8515

4

AT90S8515

ize the SP in the reset routine (before subroutines or inter-

rupts are executed). The 16-bit stack pointer SP is

read/write accessible in the I/O space.

Figure 5. Memory Maps

The 512 bytes data SRAM can be easily accessed through

the five different addressing modes supported in the AVR

architecture.

The memory spaces in the AVR architecture are all linear

and regular memory maps.

A flexible interrupt module has its control registers in the

I/O space with an additional global interrupt enable bit in

the status register. All the different interrupts have a sepa-

rate interrupt vector in the interrupt vector table at the

beginning of the program memory. The different interrupts

have priority in accordance with their interrupt vector posi-

tion. The lower the interrupt vector address the higher the

priority.

5

AT90S8515 Register Summary

Address

Name

SREG

SPH

SPL

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Page

$3F ($5F)

$3E ($5E)

$3D ($5D)

$3C ($5C)

$3B ($5B)

$3A ($5A)

$39 ($59)

$38 ($58)

$37 ($57)

$36 ($56)

$35 ($55)

$34 ($54)

$33 ($53)

$32 ($52)

$31 ($51)

$30 ($50)

$2F ($4F)

$2E ($4E)

$2D ($4D)

$2C ($4C)

$2B ($4B)

$2A ($4A)

$29 ($49)

$28 ($48)

$27 ($47)

$26 ($46)

$25 ($45)

$24 ($44)

$23 ($43)

$22 ($42)

$21 ($41)

$20 ($40)

$1F ($3F)

$1E ($3E)

$1D ($3D)

$1C ($3C)

$1B ($3B)

$1A ($3A)

$19 ($39)

$18 ($38)

$17 ($37)

$16 ($36)

$15 ($35)

$14 ($34)

$13 ($33)

$12 ($32)

$11 ($31)

$10 ($30)

$0F ($2F)

$0E ($2E)

$0D ($2D)

$0C ($2C)

$0B ($2B)

$0A ($2A)

$09 ($29)

$08 ($28)

…

I

T

H

SP13

SP5

S

SP12

SP4

V

SP11

SP3

N

SP10

SP2

Z

SP9

SP1

C

SP8

SP0

18

19

SP15

SP7

SP14

SP6

Reserved

GIMSK

GIFR

TIMSK

TIFR

INT1

INTF1

TOIE1

TOV1

INT0

INTF0

OCIE1A

OCF1A

-

24

25

OCIE1B

OCF1B

-

TICIE1

ICF1

-

TOIE0

TOV0

-

Reserved

MCUCR

Reserved

TCCR0

TCNT0

Reserved

TCCR1A

TCCR1B

TCNT1H

TCNT1L

OCR1AH

OCR1AL

OCR1BH

OCR1BL

Reserved

ICR1H

SRE

-

SRW

-

SE

-

SM

-

ISC11

-

ISC10

CS02

ISC01

CS01

ISC00

CS00

26

29

30

Timer/Counter0 (8 Bit)

COM1A1

ICNC1

COM1A0

ICES1

COM1B1

-

COM1B0

-

PWM11

CS11

PWM10

CS10

32

33

34

35

CTC1

CS12

Timer/Counter1 - Counter Register High Byte

Timer/Counter1 - Counter Register Low Byte

Timer/Counter1 - Output Compare Register A High Byte

Timer/Counter1 - Output Compare Register A Low Byte

Timer/Counter1 - Output Compare Register B High Byte

Timer/Counter1 - Output Compare Register B Low Byte

Timer/Counter1 - Input Capture Register High Byte

Timer/Counter1 - Input Capture Register Low Byte

36

ICR1L

Reserved

WDTCR

Reserved

EEARL

EEDR

-

WDTOE

-

WDE

-

WDP2

-

WDP1

-

WDP0

38

EEAR8

39

40

54

56

61

63

45

44

48

49

51

52

EEPROM Address Register Low Byte

EEPROM Data Register

EECR

PORTA

DDRA

PINA

PORTB

DDRB

-

EEMWE

PORTA2

DDA2

PINA2

PORTB2

DDB2

EEWE

PORTA1

DDA1

PINA1

PORTB1

DDB1

EERE

PORTA0

DDA0

PINA0

PORTB0

DDB0

PORTA7

DDA7

PINA7

PORTB7

DDB7

PORTA6

DDA6

PINA6

PORTB6

DDB6

PORTA5

DDA5

PINA5

PORTB5

DDB5

PORTA4

DDA4

PINA4

PORTB4

DDB4

PORTA3

DDA3

PINA3

PORTB3

DDB3

PINB

PORTC

DDRC

PINC

PORTD

DDRD

PINB7

PORTC7

DDC7

PINC7

PORTD7

DDD7

PINB6

PORTC6

DDC6

PINC6

PORTD6

DDD6

PINB5

PORTC5

DDC5

PINC5

PORTD5

DDD5

PINB4

PORTC4

DDC4

PINC4

PORTD4

DDD4

PINB3

PORTC3

DDC3

PINC3

PORTD3

DDD3

PINB2

PORTC2

DDC2

PINC2

PORTD2

DDD2

PINB1

PORTC1

DDC1

PINC1

PORTD1

DDD1

PINB0

PORTC0

DDC0

PINC0

PORTD0

DDD0

PIND

SPDR

SPSR

SPCR

UDR

USR

PIND7

SPI Data Register

SPIF

SPIE

UART I/O Data Register

RXC

PIND6

PIND5

PIND4

PIND3

PIND2

PIND1

PIND0

WCOL

SPE

-

DORD

MSTR

CPOL

CPHA

SPR1

SPR0

TXC

UDRE

FE

OR

-

UCR

UBRR

ACSR

Reserved

RXCIE

UART Baud Rate Register

ACD

TXCIE

UDRIE

RXEN

TXEN

CHR9

RXB8

TXB8

-

ACO

ACI

ACIE

ACIC

ACIS1

ACIS0

$00 ($20)

AT90S8515

6

AT90S8515

AT90S8515 Instruction Set Summary

Mnemonics

Operands

Description

Operation

Flags

#Clocks

ARITHMETIC AND LOGIC INSTRUCTIONS

ADD

ADC

ADIW

SUB

SUBI

SBC

SBCI

SBIW

AND

ANDI

OR

Rd, Rr

Rdl,K

Rd, Rr

Rd, K

Rd, Rr

Rd, K

Rdl,K

Rd, Rr

Rd, K

Rd, Rr

Rd, K

Rd, Rr

Rd

Add two Registers

Rd ← Rd + Rr

Rd ← Rd + Rr + C

Rdh:Rdl ← Rdh:Rdl + K

Rd ← Rd - Rr

Z,C,N,V,H

Z,C,N,V,S

Z,C,N,V,H

Z,C,N,V,S

Z,N,V

1

2

1

2

1

Add with Carry two Registers

Add Immediate to Word

Subtract two Registers

Subtract Constant from Register

Subtract with Carry two Registers

Subtract with Carry Constant from Reg.

Subtract Immediate from Word

Logical AND Registers

Logical AND Register and Constant

Logical OR Registers

Rd ← Rd - K

Rd ← Rd - Rr - C

Rd ← Rd - K - C

Rdh:Rdl ← Rdh:Rdl - K

Rd ← Rd • Rr

Rd ← Rd • K

Rd ← Rd v Rr

ORI

Logical OR Register and Constant

Exclusive OR Registers

One’s Complement

Rd ← Rd v K

EOR

COM

NEG

SBR

CBR

INC

Rd ← Rd Rr

Rd ← $FF − Rd

Rd ← $00 − Rd

Rd ← Rd v K

Rd ← Rd • ($FF - K)

Rd ← Rd + 1

Z,C,N,V

Z,C,N,V,H

Z,N,V

Rd

Two’s Complement

Set Bit(s) in Register

Clear Bit(s) in Register

Increment

Decrement

Test for Zero or Minus

Clear Register

Set Register

Rd,K

Rd

DEC

TST

Rd ← Rd − 1

Z,N,V

Rd ← Rd • Rd

Rd ← Rd Rd

Rd ← $FF

CLR

SER

Rd

Z,N,V

None

BRANCH INSTRUCTIONS

RJMP

IJMP

RCALL

ICALL

RET

k

Relative Jump

Indirect Jump to (Z)

Relative Subroutine Call

Indirect Call to (Z)

Subroutine Return

PC ← PC + k + 1

PC ← Z

PC ← PC + k + 1

PC ← Z

PC ← STACK

None

I

2

3

k

3

4

RETI

Interrupt Return

CPSE

CP

CPC

Rd,Rr

Compare, Skip if Equal

Compare

Compare with Carry

if (Rd = Rr) PC ← PC + 2 or 3

Rd − Rr

Rd − Rr − C

None

1 / 2

1

Z, N,V,C,H

None

CPI

Rd,K

Rr, b

P, b

s, k

k

Compare Register with Immediate

Skip if Bit in Register Cleared

Skip if Bit in Register is Set

Skip if Bit in I/O Register Cleared

Skip if Bit in I/O Register is Set

Branch if Status Flag Set

Branch if Status Flag Cleared

Branch if Equal

Branch if Not Equal

Branch if Carry Set

Branch if Carry Cleared

Branch if Same or Higher

Branch if Lower

Rd − K

1

SBRC

SBRS

SBIC

SBIS

if (Rr(b)=0) PC ← PC + 2 or 3

if (Rr(b)=1) PC ← PC + 2 or 3

if (P(b)=0) PC ← PC + 2 or 3

if (P(b)=1) PC ← PC + 2 or 3

if (SREG(s) = 1) then PC←PC+k + 1

if (SREG(s) = 0) then PC←PC+k + 1

if (Z = 1) then PC ← PC + k + 1

if (Z = 0) then PC ← PC + k + 1

if (C = 1) then PC ← PC + k + 1

if (C = 0) then PC ← PC + k + 1

if (C = 1) then PC ← PC + k + 1

if (N = 1) then PC ← PC + k + 1

if (N = 0) then PC ← PC + k + 1

if (N V= 0) then PC ← PC + k + 1

if (N V= 1) then PC ← PC + k + 1

if (H = 1) then PC ← PC + k + 1

if (H = 0) then PC ← PC + k + 1

if (T = 1) then PC ← PC + k + 1

if (T = 0) then PC ← PC + k + 1

if (V = 1) then PC ← PC + k + 1

if (V = 0) then PC ← PC + k + 1

if ( I = 1) then PC ← PC + k + 1

if ( I = 0) then PC ← PC + k + 1

1 / 2

None

BRBS

BRBC

BREQ

BRNE

BRCS

BRCC

BRSH

BRLO

BRMI

BRPL

BRGE

BRLT

BRHS

BRHC

BRTS

BRTC

BRVS

BRVC

BRIE

BRID

None

k

None

Branch if Minus

Branch if Plus

Branch if Greater or Equal, Signed

Branch if Less Than Zero, Signed

Branch if Half Carry Flag Set

Branch if Half Carry Flag Cleared

Branch if T Flag Set

Branch if T Flag Cleared

Branch if Overflow Flag is Set

Branch if Overflow Flag is Cleared

Branch if Interrupt Enabled

Branch if Interrupt Disabled

k

None

k

None

7

AT90S8515 Instruction Set Summary

Mnemonics

Operands

Description

Operation

Flags

#Clocks

DATA TRANSFER INSTRUCTIONS

MOV

LDI

LD

Rd, Rr

Rd, K

Move Between Registers

Load Immediate

Rd ← Rr

Rd ← K

None

1

2

3

1

2

Rd, X

Load Indirect

Rd ← (X)

Rd, X+

Rd, - X

Rd, Y

Rd, Y+

Rd, - Y

Rd,Y+q

Rd, Z

Rd, Z+

Rd, -Z

Rd, Z+q

Rd, k

Load Indirect and Post-Inc.

Load Indirect and Pre-Dec.

Load Indirect

Load Indirect and Post-Inc.

Load Indirect and Pre-Dec.

Load Indirect with Displacement

Load Indirect

Load Indirect and Post-Inc.

Load Indirect and Pre-Dec.

Load Indirect with Displacement

Load Direct from SRAM

Store Indirect

Store Indirect and Post-Inc.

Store Indirect and Pre-Dec.

Store Indirect

Store Indirect and Post-Inc.

Store Indirect and Pre-Dec.

Store Indirect with Displacement

Store Indirect

Store Indirect and Post-Inc.

Store Indirect and Pre-Dec.

Store Indirect with Displacement

Store Direct to SRAM

Load Program Memory

In Port

Rd ← (X), X ← X + 1

X ← X - 1, Rd ← (X)

Rd ← (Y)

Rd ← (Y), Y ← Y + 1

Y ← Y - 1, Rd ← (Y)

Rd ← (Y + q)

Rd ← (Z)

Rd ← (Z), Z ← Z+1

Z ← Z - 1, Rd ← (Z)

Rd ← (Z + q)

Rd ← (k)

LDD

LD

LDD

LDS

ST

X, Rr

(X) ← Rr

X+, Rr

- X, Rr

Y, Rr

Y+, Rr

- Y, Rr

Y+q,Rr

Z, Rr

Z+, Rr

-Z, Rr

Z+q,Rr

k, Rr

(X) ← Rr, X ← X + 1

X ← X - 1, (X) ← Rr

(Y) ← Rr

(Y) ← Rr, Y ← Y + 1

Y ← Y - 1, (Y) ← Rr

(Y + q) ← Rr

STD

ST

(Z) ← Rr

(Z) ← Rr, Z ← Z + 1

Z ← Z - 1, (Z) ← Rr

(Z + q) ← Rr

ST

STD

STS

LPM

IN

OUT

PUSH

POP

(k) ← Rr

R0 ← (Z)

Rd ← P

P ← Rr

STACK ← Rr

Rd ← STACK

Rd, P

P, Rr

Rr

Out Port

Push Register on Stack

Pop Register from Stack

Rd

BIT AND BIT-TEST INSTRUCTIONS

SBI

CBI

LSL

P,b

Rd

s

Set Bit in I/O Register

Clear Bit in I/O Register

Logical Shift Left

Logical Shift Right

Rotate Left Through Carry

Rotate Right Through Carry

Arithmetic Shift Right

Swap Nibbles

Flag Set

Flag Clear

Bit Store from Register to T

Bit load from T to Register

Set Carry

I/O(P,b) ← 1

I/O(P,b) ← 0

Rd(n+1) ← Rd(n), Rd(0) ← 0

Rd(n) ← Rd(n+1), Rd(7) ← 0

Rd(0)←C,Rd(n+1)← Rd(n),C←Rd(7)

Rd(7)←C,Rd(n)← Rd(n+1),C←Rd(0)

None

Z,C,N,V

2

1

3

1

LSR

ROL

ROR

ASR

SWAP

BSET

BCLR

BST

BLD

SEC

CLC

SEN

CLN

SEZ

CLZ

SEI

Rd(n) ← Rd(n+1), n=0..6

Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0)

Z,C,N,V

None

SREG(s)

T

None

SREG(s) ← 1

SREG(s) ← 0

T ← Rr(b)

Rd(b) ← T

C ← 1

C ← 0

N ← 1

N ← 0

Z ← 1

s

Rr, b

Rd, b

C

N

Z

Clear Carry

Set Negative Flag

Clear Negative Flag

Set Zero Flag

Clear Zero Flag

Z ← 0

Global Interrupt Enable

Global Interrupt Disable

Set Signed Test Flag

Clear Signed Test Flag

Set Twos Complement Overflow.

Clear Twos Complement Overflow

Set T in SREG

I ← 1

I ← 0

S ← 1

S ← 0

V ← 1

V ← 0

I

S

V

CLI

SES

CLS

SEV

CLV

SET

CLT

SEH

CLH

NOP

SLEEP

WDR

T ← 1

T ← 0

H ← 1

H ← 0

T

H

None

Clear T in SREG

Set Half Carry Flag in SREG

Clear Half Carry Flag in SREG

No Operation

Sleep

(see specific descr. for Sleep function)

(see specific descr. for WDR/timer)

Watchdog Reset

AT90S8515

8


型号：	AT90S8515
厂家：	ATMEL
描述：	8-Bit Microcontroller with 8K bytes In-System Programmable Flash 8位微控制器具有8K字节的系统内可编程闪存闪存微控制器
文件：	总8页 (文件大小：705K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AT90S8515 [ATMEL]

相关型号：

AT90S8515-4AC

AT90S8515-4AI

AT90S8515-4JC

AT90S8515-4JI

AT90S8515-4PC

AT90S8515-4PI

AT90S8515-8AC

AT90S8515-8AI

AT90S8515-8JC

AT90S8515-8JI

AT90S8515-8PC

AT90S8515-8PI