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参数资料
| 型号： | P83C251TQ24 |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 34/36页 |
| 文件大小： | 813K |
| 代理商： | P83C251TQ24 |
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1
8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
B2976-01
SRC2 (8)
Code Address (24)
Clock & Reset
Code Bus (16)
Data RAM
512 Bytes
or
1024 Bytes
Code
OTPROM/ROM
8 Kbytes
or
16 Kbytes
Watchdog
Timer
Timer/
Counters
PCA
Two
Serial I/O
Ports
Peripherals
Port 2
Drivers
P2.7:0
Port 0
Drivers
P0.7:0
Port 3
Drivers
P3.7:0
Port 1
Drivers
P1.7:0
Data
Address
(24)
Data
Bus
(8)
Memory Address (16)
MCS 251 Microcontroller Core
System Bus and I/O Ports
I/O Ports and
Peripheral Signals
SRC1 (8)
IB
Bus
(8)
Peripheral
Interface
Interrupt
Handler
Clock
&
Reset
Bus Interface
Instruction Sequencer
DST (16)
ALU
Data
Memory
Interface
Memory Data (16)
Register
File
1.0
INTRODUCTION
A member of the Intel family of 8-bit MCS 251 micro-
controllers,
the
8xC251TB/TQ
is
binary-code
compatible with MCS 51 microcontrollers and pin
compatible with 40-pin PDIP and 44-pin PLCC
MCS 51 microcontrollers. MCS 251 microcontrollers
feature
an
enriched
instruction
set,
linear
addressing, and efficient C-language support. The
8xC251TB/TQ has 512 bytes or 1 Kbyte of on-chip
RAM and is available with 8 Kbytes or 16 Kbytes of
on-chip ROM, or without ROM. A variety of features
can be selected by new user-programmable configu-
rations.
Figure 1. 8xC251TB/TQ Block Diagram
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