935263159551 [NXP]
IC 8-BIT, 16 MHz, MICROCONTROLLER, PQFP80, 14 X 20 X 2.70 MM, PLASTIC, QFP-80, Microcontroller;
| 型号： | 935263159551 |
| 厂家： | 
NXP |
| 描述： | IC 8-BIT, 16 MHz, MICROCONTROLLER, PQFP80, 14 X 20 X 2.70 MM, PLASTIC, QFP-80, Microcontroller 微控制器 |
| 文件： | 总88页 (文件大小：2521K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Information as of 2000-08-29
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P8xC557E8; 8-bit microcontroller
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Description
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The 8-bit microcontrollers P80C557E8, P83C557E8 and P87C557E8 - hereafter referred to as P8xC557E8 - are
manufactured in an advanced CMOS process and are derivatives of the 80C51 microcontroller family.
Consumer Multimedia
Systems
Communications
The P8xC557E8 contains a volatile 2048 bytes read/write Data Memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit
timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and compare latches,
a 15-source, two-priority-level, nested interrupt structure, an 8-input ADC, a dual Digital-to-Analog Convertor (DAC), Pulse
Width Modulated interface, two serial interfaces (UART and I²C-bus), a Watchdog Timer, an on-chip oscillator and timing
circuits.
PC/PC-peripherals
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Application notes
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End of Life information
Datahandbook system
The P8xC557E8 is available in 3 versions:
l P80C557E8: ROMless version
l P83C557E8: containing a non-volatile 64 kbytes mask programmable ROM
l P87C557E8: containing 64 kbytes programmable EPROM/OTP.
The P8xC557E8 is a control-oriented CPU with on-chip Program and Data Memory; it cannot be extended with external
Program Memory. It can access up to 64 kbytes of external Data Memory. For systems requiring extra capability, the
P8xC557E8 can be expanded using standard TTL compatible memories and peripherals.
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In addition, the P8xC557E8 has two software selectable reduced power modes: Idle mode and Power-down mode. The Idle
mode freezes the CPU while allowing the RAM, timers, serial ports, and interrupt system to continue functioning. The Power-
down mode saves the RAM contents but freezes the oscillator, causing all other chip functions to be inoperative.The Power-
down mode can be terminated by an external reset, by the seconds interrupt and by any one of the two external interrupts.
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P8xC557E8
P8xC557E8
The device also functions as an arithmetic processor having facilities for both binary and BCD arithmetic as well as bit-
handling capabilities. The instruction set of the P8xC557E8 is the same as the 80C51 and consists of over 100 instructions:
49 one-byte, 45 two-byte, and 17 three-byte. With a 16 MHz system clock, 58 pct of the instructions are executed in 0.75 µs
and 40 pct in 1.5 µs. Multiply and divide instructions require 3 µs.
Electromagnetic Compatibility (EMC)
Primary attention is paid to the reduction of electromagnetic emission of the microcontroller P8xC557E8. The following
features reduce the electromagnetic emission and additionally improve the electromagnetic susceptibility:
l Four digital part supply voltage pins (VDD1 to VDD4) and four digital ground pins (VSS1 to VSS4) are placed as pairs of VDDn
and VSSn at two adjacent pins, at each side of the package.
Separated VDD pins for the internal logic and the port buffers.
l
l Internal decoupling capacitance improves the EMC radiation behaviour and the EMC immunity.
l External capacitors should be connected across associated VDDn and VSSn pins (i.e. VDD1 and VSS1). Lead length should
be as short as possible. Ceramic chip capacitors are recommended (100 nF).
Recommendation on ALE
For applications that require no external memory or temporarily no external memory: the ALE output signal (pulses at a
frequency of 1/6 ×fOSC) can be disabled under software control (bit RFI; SFR: PCON.5); if disabled, no ALE pulse will occur.
ALE pin will be pulled down internally, switching an external address latch to a quiet state. The MOVX instruction will still
toggle ALE (external Data Memory is accessed). ALE will retain its normal HIGH value during Idle mode and a LOW value
during Power-down mode while in the ‘
reduction mode’.
RFI
Additionally during internal access (EA = 1) ALE will toggle normally when the address exceeds the internal Program Memory
size. During external access (EA = 0) ALE will always toggle normally, whether the flag ‘RFI’ is set or not.
P8xC557Ex factsheet
Features
l 80C51 Central Processing Unit (CPU)
l 64 kbytes ROM (only P83C557E8)
l 64 kbytes EPROM (only P87C557E8)
l ROM/EPROM Code protection
l 2048 bytes RAM, expandable externally to 64 kbytes
l Two standard 16-bit timers/counters
l An additional 16-bit timer/counter coupled to four capture registers and three compare registers
l A 10-bit Analog-to-Digital Converter (ADC) with eight multiplexed analog inputs and programmable autoscan vTwo 8-
bit resolution, Pulse Width Modulation outputs
l Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs
l I²C-bus serial I/O port with byte oriented master and slave functions
l Full-duplex UART compatible with the standard 80C51
l On-chip Watchdog Timer
l 15 interrupt sources with 2 priority levels (2 to 6 external sources possible)
l Phase-Locked Loop (PLL) oscillator with 32 kHz reference and software-selectable system clock frequency
l Seconds timer
l Software enable/disable of ALE output pulse
l Electromagnetic compatibility improvements
l Wake-up from Power-down by external or seconds interrupt
l Frequency range for 80C51-family standard oscillator: 3.5 to 16 MHz
l Extended temperature range: -40 to +85 Cel
l Supply voltage: 4.5 to 5.5 V.
Datasheet
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P8xC557E8 8-bit microcontroller
12-Mar-99
Product
84
322
Specification
Products, packages, availability and ordering
North American Order code
Partnumber
marking/packing
Standard Marking *
package device status buy online
Partnumber
(12nc)
P80C557E8EFB/00 P80C557E8B-T 9352 631 59518 Reel Dry Pack, SMD, SOT318 Full production
13"
-
-
Standard Marking *
P80C557E8B-S 9352 631 59551 Tray Dry Pack,
Bakeable, Single
SOT318 Full production
Standard Marking *
Tray Dry Pack,
Bakeable, Multiple
9352 631 59557
SOT318 Full production
Standard Marking *
P87C557E8EFB/01 P87C557E8B-T 9352 631 60518 Reel Dry Pack, SMD, SOT318 Full production
13"
-
-
Standard Marking *
P87C557E8B-S 9352 631 60551 Tray Dry Pack,
Bakeable, Single
SOT318 Full production
SOT318 Full production
Standard Marking *
P87C557E8B
9352 631 60557 Tray Dry Pack,
Bakeable, Multiple
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相关型号：
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