p89c538nbbb NXP Semiconductors, p89c538nbbb Datasheet - Page 2

• Manufacturer Part Number: p89c538nbbb
• Description: Cmos Single-chip 8-bit Microcontrollers With Flash Program Memory
• Manufacturer: NXP Semiconductors

DESCRIPTION
The 89C535/89C536/89C538 are Single-Chip 8-Bit Microcontrollers
manufactured in advanced CMOS process and are derivatives of
the 80C51 microcontroller family. All the devices have the same
instruction set as the 80C51.
The devices also have four 8-bit I/O ports, three 16-bit timer/event
counters, a multi-source, two-priority-level, nested interrupt
structure, UART and on-chip oscillator and timing circuits. For
systems that require extra data memory capability up to 64k bytes,
each can be expanded using standard TTL-compatible memories
and logic.
The 89C535/89C536/89C538 contain a non-volatile FLASH EPROM
program memory (8K bytes in 89C535, 16k bytes in the 89C536,
and 64k bytes in the 89C538). The devices have 512 bytes of RAM
data memory.
FEATURES
ORDERING INFORMATION
Philips Semiconductors
1997 Jun 05
80C51 Central Processing Unit
8k x 8 (89C535) 16k
EPROM Program Memory
512
Three 16-bit counter/timers
Up to 3 external interrupt request inputs
6 interrupt sources with 2 priority levels
Four 8-bit I/O ports
Full-duplex UART
Power control modes
– Idle mode
– Power down mode, with wakeup from power down using
44-pin PLCC and QFP packages
PART NUMBER
CMOS single-chip 8-bit microcontrollers
with FLASH program memory
P89C535NBA A
P89C536NBA A
P89C536NBB B
P89C538NBA A
P89C538NBB B
external interrupt
8 RAM, externally expandable to 64k
8 (89C536) or 64k
MEMORY SIZE
16k bytes
16k bytes
64k bytes
64k bytes
8k bytes
8 (89C538), FLASH
8 Data Memory
TEMPERATURE RANGE ( C) AND PACKAGE
0 to +70, 44-pin Plastic Leaded Chip Carrier
0 to +70, 44-pin Plastic Leaded Chip Carrier
0 to +70, 44-pin Plastic Leaded Chip Carrier
0 to +70, 44-pin Plastic Quad Flat Package
0 to +70, 44-pin Plastic Quad Flat Package
2
LOGIC SYMBOL
INT0
INT1
RxD
TxD
WR
RD
T0
T1
ALE/PROG
EA/V
PSEN
RST
XTAL1
XTAL2
PP
89C535/89C536/89C538
V
CC
V
SS
FREQ.
(MHz)
33
33
33
33
33
Preliminary specification
T2
T2EX
ADDRESS AND
ADDRESS BUS
DATA BUS
DRAWING
SOT187-2
SOT187-2
SOT307-2
SOT187-2
SOT307-2
NUMBER
SU00830