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P87C654X2 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. P87C654X2
Description  80C51 8-bit microcontroller family 16 kB OTP/ROM, 256B RAM, low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz)
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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P87C654X2 Datasheet(HTML) 4 Page - NXP Semiconductors

 
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Philips Semiconductors
Product data
P83C654X2/P87C654X2
80C51 8-bit microcontroller family 16 kB OTP/ROM,
256B RAM, low voltage (2.7 to 5.5 V), low power, high speed
(30/33 MHz)
2004 Apr 20
4
BLOCK DIAGRAM (CPU ORIENTED)
SU01751
PSEN
EAVPP
ALE
RST
XTAL1
XTAL2
VCC
VSS
PORT 0
DRIVERS
PORT 2
DRIVERS
RAM ADDR
REGISTER
RAM
PORT 0
LATCH
PORT 2
LATCH
OTP/ROM
MEMORY
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
P.C.A.
8
8
16


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