P89C51RA 查看數據表（PDF） - Philips Electronics
零件编号
产品描述 (功能)
比赛名单
P89C51RA
Philips Electronics
P89C51RA Datasheet PDF : 68 Pages
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Philips Semiconductors
80C51 8-bit Flash microcontroller family
8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM
Preliminary data
P89C51RA2/RB2/RC2/RD2xx
BLOCK DIAGRAM – CPU ORIENTED
VCC
VSS
RAM ADDR
REGISTER
RAM
P0.0–P0.7
PORT 0
DRIVERS
PORT 0
LATCH
P2.0–P2.7
PORT 2
DRIVERS
PORT 2
LATCH
FLASH
B
REGISTER
ACC
TMP2
TMP1
STACK
POINTER
8
PROGRAM
ADDRESS
REGISTER
ALU
PSW
PSEN
ALE
EAVPP
RST
TIMING
AND
CONTROL
PD
OSCILLATOR
XTAL1
XTAL2
PORT 1
LATCH
PORT 1
DRIVERS
P1.0–P1.7
SFRs
TIMERS
P.C.A.
BUFFER
PC
INCRE-
MENTER
8
16
PROGRAM
COUNTER
PORT 3
LATCH
DPTR’S
MULTIPLE
PORT 3
DRIVERS
P3.0–P3.7
SU01065
2002 Jul 18
5
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