80C51RH [MAXWELL]
Microcontroller, 8-Bit, MROM, 12.5MHz, CMOS;
| 型号： | 80C51RH |
| 厂家： | 
MAXWELL TECHNOLOGIES |
| 描述： | Microcontroller, 8-Bit, MROM, 12.5MHz, CMOS 时钟 微控制器 外围集成电路 |
| 文件： | 总6页 (文件大小：541K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPACE ELECTRONICS INC.
8-BIT MICROCONTROLLER
SPACE PRODUCTS
80C51RH
Control
D
A
T
A
A
ROM
CPU
RAM
D
D
R
E
S
S
SEi
Interrupt Contrller
80C51RH
Chip Select Unit
Serial Controller
Watch Dog Timer
Counter Unit
Parallel Port
FEATURES:
DESCRIPTION:
Space Electronics’ 80C51RH is an INTEL compatible single chip microcon-
troller and is fabricated using radiation-hardened SOI technology. The
80C51RH 8-bit microcontroller features a typical 10 MRads (Si) total dose
tolerance (dependent upon orbit and mission duration) and is latchup
immune.
• 128 bytes of on-chip data RAM
• Four 16-bit timer/counter
• 80 programmable I/O lines (ten 8-bit ports)
• 2 programmable full duplex serial channels
• Single +5 V power supply
• Military temperature range: -55 to 125 oC
• Radiation-hardened:
7
-Total dose: 1 x 10 rads(Si)
-8
- SEU: 1 x 10 (upsets/bit-day)
- SEL: immune
0215.99Rev0
1
All data sheets are subject to change without notice
(619) 452-4167 - Fax: (619) 452-5499 - www.spaceelectronics.com
©1999 Space Electronics Inc.
All rights reserved.
80C51RH
8-BIT MICROCONTROLLER
TABLE 1.
FUNCTION
DESCRIPTION
Core CPU
Instruction Set
Clock Frequency
Internal ROM
Internal Data RAM
Interrupt Circuit
Full software compatible with INTEL 8051 (8-bit CPU)
12.5 MHz maximum
3.5 Kbytes mask ROM
128 bytes
2 Channel (external interrupt)
3 Channel (internal interrupt for CPU)
Digital Interface Circuit Serial I/O Port
Number of Channels
1 Channel (Core CPU)
1 Channel (Using M8251 macro-based)
Full duplex
Digital Transmission
Transfer Rate
300-19200 bps (programmable)
Asynchronous communications
Transfer Method
Parallel I/O Port
Number of I/O Ports
1 Port (Core CPU)
9 Ports (3 x M8255 macro-based)
80 bit (8-bits x 10 ports)
Programmable per 8-bit unit
Number of I/O Bits
I/O Setup
TABLE 2.
FUNCTION
DESCRIPTION
Boot Loader/Debugger Programs 1
Built-in test (register check, calculator check, memory check)
Down load of a user program (conform to INTEL HEX file)
Dump of external data memory
Display and modify data of external data memory
Display and modify data of internal data memory
Dispaly and modify data of register
Execute and interrupt a user program
1. Internal mask ROM has the boot loader/debugger programs which enable user program to be loaded through serial lines from external host
computer and to be executed. The external host computer sends the command through serial lines to download the program.
0215.99Rev0
All data sheets are subject to change without notice
2
©1999 Space Electronics Inc.
All rights reserved.
80C51RH
8-BIT MICROCONTROLLER
TABLE 3.
FUNCTION
DESCRIPTION
Counter/Timer Circuit (CTC)
Number of Channels
2 channel (core CPU)
3 channel (using M8254 macro-based)
16-bit length
Number of Count bit
Setup of Clock Input
2 channel (core CPU) Programmable select external/internal input
3 channel (M8254 macro-based) external input only
Supplement
One of 2 channel (core CPU) and one of 3 channel used for the baud rate generator
TABLE 4.
FUNCTION
DESCRIPTION
Watch-dog-timer Circuit (WDT)
Time of WDT
11, 22, 44 , 87, 175, 350, 699, 1398 ms (at 12 MHz) clock) programmable
The error signal of WDT to outside of RH8M51
The output of WDT
TABLE 5.
FUNCTION
DESCRIPTION
Function of Extend Circuit 1
Signal of external interface bus
Address Bus
16-bit
Data Bus
8-bit
Control Bus
Program memory read (PSEN*)
Data memory read (RD*)
Data memory write (WR*)
Memory read (MEM_RD*)
I/O request (IORQ*)
2-bit (32 Kbyte per unit)
7-bit (32 Kbyte per unit)
Signal of external memory select
Signal of bank select
1. This device has some select signals to extend I/O lines and memories outside of 80C51RH.
0215.99Rev0
All data sheets are subject to change without notice
3
©1999 Space Electronics Inc.
All rights reserved.
80C51RH
8-BIT MICROCONTROLLER
TABLE 6.
FUNCTION
DESCRIPTION
1
Bus Line of External ROM
Address bus
12-bit
8-bit
Data bus
1. The 80C51RH is able to have an external ROM without using internal mask ROM.
0215.99Rev0
All data sheets are subject to change without notice
4
©1999 Space Electronics Inc.
All rights reserved.
80C51RH
8-BIT MICROCONTROLLER
FIGURE 1. 80C51RH BLOCK DIAGRAM
0215.99Rev0
All data sheets are subject to change without notice
5
©1999 Space Electronics Inc.
All rights reserved.
80C51RH
8-BIT MICROCONTROLLER
FIGURE 2. PIN CONNECTIONS
0215.99Rev0
All data sheets are subject to change without notice
6
©1999 Space Electronics Inc.
All rights reserved.
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