參數(shù)資料
型號(hào): 87C451
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, expanded I/O
中文描述: 80C51的8位單片機(jī)系列4K/128檢察官辦公室/光盤/無ROM,擴(kuò)展的I / O
文件頁(yè)數(shù): 3/22頁(yè)
文件大小: 162K
代理商: 87C451
Philips Semiconductors
Product specification
80C451/83C451/87C451
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, expanded I/O
1998 May 01
3
BLOCK DIAGRAM
PSEN
EAV
PP
RST
ALE/PROG
XTAL1
XTAL2
V
CC
V
SS
PORT 0
DRIVERS
PORT 2
RAM ADDR
RAM
LATCH
PORT 2
LATCH
REGISTER
B
ACC
PSTACK
TMP2
TMP1
ALU
TAND
CONTROL
I
R
PD
OSCILLATOR
PSW
PORT 1
LATCH
LATCH
PORT 1
DRIVERS
PORT 3
ADDRESS
REGISTER
BUFFER
PC
INCRE-
COUNTER
DPTR
PCON
SCON
TH0
TMOD
TL0
TCON
TH1
TL1
SBUF
IE
IP
POINTERRUPT, SERIAL
P1.0–P1.7
P3.0–P3.7
P0.0–P0.7
P2.0–P2.7
PORT 4
DRIVERS
LATCH
P4.0–P4.7
PORT 5
DRIVERS
LATCH
P5.0–5.7
PORT 6
LATCH
PORT 6
DRIVERS
P6.0–P6.7
PORT 6
CONTROL/STATUS
IDS ODS
AFLAG
BFLAG
4K x 8
ROM/EPROM
SU00086
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