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P80C31 Datasheet(PDF) 4 Page - NXP Semiconductors

Part # P80C31
Description  80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage 2.7V.5.5V, low power, high speed 33 MHz
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

P80C31 Datasheet(HTML) 4 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
80C51/87C51/80C31
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
2000 Jan 20
4
BLOCK DIAGRAM
SU00845
PSEN
EAVPP
ALE/PROG
RST
XTAL1
XTAL2
VCC
VSS
PORT 0
DRIVERS
PORT 2
DRIVERS
RAM ADDR
REGISTER
RAM
PORT 0
LATCH
PORT 2
LATCH
ROM/EPROM
REGISTER
B
ACC
STACK
POINTER
TMP2
TMP1
ALU
TIMING
AND
CONTROL
PD
OSCILLATOR
PSW
PORT 1
LATCH
PORT 3
LATCH
PORT 1
DRIVERS
PORT 3
DRIVERS
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCRE-
MENTER
PROGRAM
COUNTER
DPTR’S
MULTIPLE
P1.0–P1.7
P3.0–P3.7
P0.0–P0.7
P2.0–P2.7
SFRs
TIMERS
8
8
16


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