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OM5232 Datasheet

CMOS single-chip 8-bit microcontroller

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Philips Semiconductors
CMOS single-chip 8-bit microcontroller
Product specification
OM5232
DESCRIPTION
The OM5232 Single-Chip 8-Bit Microcontroller is manufactured in an
advanced CMOS process and is a derivative of the 80C51
microcontroller family. The OM5232 has the same instruction set as
the 80C51.
See also:
– OM5202 — ROMless version
– OM5234 — 16K bytes mask programmable ROM
– OM5238 — 32K bytes mask programmable ROM
This device provides architectural enhancements that make it
applicable in a variety of applications for general control systems.
The OM5232 contains a non-volatile 8k × 8 read-only program
memory, a volatile 256 × 8 read/write data memory, four 8-bit I/O
ports, two 16-bit timer/event counters (identical to the timers of the
80C51), a multi-source, two-priority-level, nested interrupt structure,
UART and on-chip oscillator and timing circuits. For systems that
require extra capability, the OM5232 can be expanded using
standard TTL compatible memories and logic.
The device also functions as an arithmetic processor having
facilities for both binary and BCD arithmetic plus bit-handling
capabilities. The instruction set consists of over 100 instructions: 49
one-byte, 45 two-byte and 17 three-byte. With a 16MHz crystal, 58%
of the instructions are executed in 0.75µs and 40% in 1.5µs. Multiply
and divide instructions require 3µs.
FEATURES
80C51 central processing unit
8k × 8 ROM, expandable externally to 64k bytes
256 × 8 RAM, expandable externally to 64k bytes
Two standard 16-bit timer/counters
Four 8-bit I/O ports
Two open drain I/O’s (P1.6, P1.7)
Full-duplex UART facilities
Power control modes
Idle mode
Power-down mode
ROM code protection
Extended frequency range: 1.2 to 16 MHz
Operating ambient temperature range: 0 to +70°C
PIN CONFIGURATIONS
P1.0 1
P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RST 9
RxD/P3.0 10
TxD/P3.1 11
INT0/P3.2 12
INT1/P3.3 13
T0/P3.4 14
T1/P3.5 15
WR/P3.6 16
RD/P3.7 17
XTAL2 18
XTAL1 19
VSS 20
44
40 VDD
39 P0.0/AD0
38 P0.1/AD1
37 P0.2/AD2
36 P0.3/AD3
35 P0.4/AD4
34 P0.5/AD5
33 P0.6/AD6
32 P0.7/AD7
DIP 31 EA
30 ALE
29 PSEN
28 P2.7/A15
27 P2.6/A14
26 P2.5/A13
25 P2.4/A12
24 P2.3/A11
23 P2.2/A10
22 P2.1/A9
21 P2.0/A8
34
1 33
QFP
(SOT307–2)
11 23
12 22
SEE PAGE 2 FOR QFP PIN FUNCTIONS.
PART NUMBER SELECTION
PHILIPS PART
ORDER NUMBER
PART MARKING
PACKAGE NUMBER
OM5232/FBP/xxx 1)
SOT129
OM5232/FBB/xxx 1)
SOT307–2
NOTE:
1. xxx denotes the ROM code number.
TEMPERATURE RANGE °C,
PACKAGE
0 to +70, Plastic Dual In–line Package, 40 leads
0 to +70, Plastic Quad Flat Pack, 44 leads
FREQUENCY
MHz
1.2 to 16
1.2 to 16
EQUIVALENT TYPES
Details are as specified by the data sheet for the equivalent type:
OM5202 = P80C652 without I2C function.
OM5232 = P83C652 without I2C function.
OM5234 = P83C654 without I2C function.
OM5238 = P83C528 without I2C function.
December 1994
1


NXP Semiconductors Electronic Components Datasheet

OM5232 Datasheet

CMOS single-chip 8-bit microcontroller

No Preview Available !

Philips Semiconductors
CMOS single-chip 8-bit microcontroller
Product specification
OM5232
QFP PIN FUNCTIONS
44
34
1 33
QFP
(SOT307–2)
11 23
12 22
Pin Function
1 P1.5
2 P1.6
3 P1.7
4 RST
5 P3.0/RxD
6 VSS4
7 P3.1/TxD
8 P3.2/INT0
9 P3.3/INT1
10 P3.4/T0
11 P3.5/T1
12 P3.6/WR
Pin Function
16 VSS1
17 NC
18 P2.0/A8
19 P2.1/A9
20 P2.2/A10
21 P2.3/A11
22 P2.4/A12
23 P2.5/A13
24 P2.6/A14
25 P2.7/A15
26 PSEN
27 ALE
Pin Function
31 P0.6/AD6
32 P0.5/AD5
33 P0.4/AD4
34 P0.3/AD3
35 P0.2/AD2
36 P0.1/AD1
37 P0.0/AD0
38 VDD
39 VSS3
40 P1.0
41 P1.1
42 P1.2
13 P3.7/RD
14 XTAL2
15 XTAL1
28 VSS2
29 EA/VPP
30 P0.7/AD7
43 P1.3
44 P1.4
NOTE:
1. Due to EMC improvements, all VSS pins (6, 16, 28, 39) must be
connected to VSS.
BLOCK DIAGRAM
FREQUENCY
REFERENCE
XTAL2 XTAL1
LOGIC SYMBOL
VDDVSS
RST
XTAL1
XTAL2
EA
PSEN
ALE
RxD
TxD
INT0
INT1
T0
T1
WR
RD
COUNTERS
T0 T1
OSCILLATOR
AND
TIMING
PROGRAM
MEMORY
(8K x 8 ROM)
DATA
MEMORY
(256 x 8 RAM)
TWO 16-BIT
TIMER/EVENT
COUNTERS
CPU
INTERNAL
INTERRUPTS
64K BYTE BUS
EXPANSION
CONTRTOL
PROGRAMMABLE I/O
PROG SERIAL PORT
FULL DUPLEX UART
SYNCHRONOUS SHIFT
INT0
INT1
EXTERNAL
INTERRUPTS
December 1994
CONTROL
PARALLEL PORTS,
ADDRESS/DATA BUS
AND I/O PINS
SERIAL IN SERIAL OUT
SHARED WITH
PORT 3
2


Part Number OM5232
Description CMOS single-chip 8-bit microcontroller
Maker NXP
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OM5232 Datasheet PDF






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