p89c538nbb NXP Semiconductors, p89c538nbb Datasheet - Page 3

• Manufacturer Part Number: p89c538nbb
• Description: Cmos Single-chip 8-bit Microcontrollers With Flash Program Memory
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
LOGIC SYMBOL
1998 Apr 24
80C51 8-bit microcontroller family
16K/64K/512 FLASH
INT0
INT1
RxD
TxD
WR
RD
T0
T1
ALE/PROG
EA/V
PSEN
RST
XTAL1
XTAL2
PP
ALE/PROG
V
EAV
PSEN
CC
RST
PP
V
V
CC
SS
V
XTAL1
SS
CONTROL
RAM ADDR
REGISTER
TIMING
REGISTER
OSCILLATOR
AND
B
PD
XTAL2
T2
T2EX
ADDRESS AND
ADDRESS BUS
RAM
DATA BUS
ACC
SU00830
P1.0–P1.7
DRIVERS
PORT 1
TMP2
PORT 1
LATCH
PSW
DRIVERS
PORT 0
PORT 0
LATCH
P0.0–P0.7
ALU
TMP1
3
TIMERS
DRIVERS
SFRs
PORT 2
P2.0–P2.7
PORT 2
LATCH
PROGRAMMING INFORMATION:
Programmers are provided by:
Company
Advin
BP Microsystem
Data I/O
HiLo
POINTER
DRIVERS
P3.0–P3.7
PORT 3
STACK
PORT 3
LATCH
EPROM
ROF/
8
PROGRAM
PROGRAM
REGISTER
COUNTER
MULTIPLE
ADDRESS
MENTER
BUFFER
DPTR’S
INCRE-
Phone Number
1–800–627–2456
1–800–225–2102 http://www.bpmicro.com
1–206–881–6444 http://www.data–io.com
PC
8
SU00854
16
89C536/89C538
Internet Address
Preliminary specification