Philips om5234 DATASHEETS
INTEGRATED CIRCUITS
OM5234/OM5284
CMOS single-chip 8-bit microcontrollers
Preliminary specification 1996 Nov 01
Philips Semiconductors Preliminary specification
OM5234/OM5284CMOS single-chip 8-bit microcontrollers
DESCRIPTION
The OM5234 and OM5284 single-chip 8-bit microcontrollers are
manufactured in an advanced CMOS process and are derivatives of
the 80C51 microcontroller family . The OM5234 and OM5284 are
pre-programmed devices for specific applications. Unless
specifically stated otherwise, all references to OM5234 apply equally
to OM5284.
The OM5234 contains a non-volatile 16k × 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.
FEA TURES
•80C51 central processing unit
•6k × 8 ROM
•256 × 8 RAM
•Two standard 16-bit timer/counters
•Four 8-bit I/O ports
•Full-duplex UART facilities
•Power control modes
– Idle mode
– Power-down mode
•ROM code protection
ORDERING INFORMATION
OM5234 F T P
Device
OM5234
Frequency Range
F = 3.5 to 16MHz
I = 3.5 to 24MHz
T emperature Range
/
/ YYY
ROM code for application
5XX, etc.
Package designator
A = Plastic Leaded Chip Carrier
B = Plastic Quad Flat Package
Device
OM5284
Frequency Range
E = 3.5 to 16MHz
I = 3.5 to 24MHz
P = Plastic Dual In-Line Package
B = 0 to 70°C
PART NUMBER
TEMPERATURE RANGE °C
AND PACKAGE
OM5234/FBB/YYY 0 to 70°C, Plastic Quad Flat Package 16 SOT307-2
OM5234/FBP/YYY 0 to 70°C, Plastic Dual In-Line Package 16 SOT129-1
OM5234/FBA/YYY 0 to 70°C, Plastic Leaded Chip Carrier 16 SOT187-2
OM5284EBYY 0 to 70°C, Plastic Quad Flat Package 16 SOT307-2
OM5284EA YY 0 to 70°C, Plastic Leaded Chip Carrier 16 SOT187-2
OM5284EPYY 0 to 70°C, Plastic Dual In-Line Package 16 SOT129-1
OM5284 X Y ZZ
ROM code for application
01, 02, 03
Package designator
A = Plastic Leaded Chip Carier
B = Plastic Quad Flat Package
P = Plastic Dual In-Line Package
FREQUENCY
(MHz)
DRAWING
NUMBER
LOGIC SYMBOL
1996 Nov 01
RST
XTAL1
XTAL2
PSEN
ALE
ALTERNATE
FUNCTIONS
RxD
TxD
INT0
INT1
T0
T1
WR
RD
EA
VSSV
CC
ADDRESS AND
PORT 0
PORT 3
PORT 1PORT 2
DATA BUS
ADDRESS BUS
SU00800
2
Philips Semiconductors Preliminary specification
OM5234/OM5284CMOS single-chip 8-bit microcontrollers
PIN CONFIGURATIONS
DUAL IN-LINE PACKAGE
PIN FUNCTIONS
1
P1.0
P1.1
2
3
P1.2
4
P1.3
5
P1.4
6
P1.5
7
P1.6
P1.7
8
9
RST
10
P3.0/RxD
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P3.6/WR
P3.7/RD
XTAL2
XTAL1
V
SS
11
12
13
14
15
16
17
18
19
20
IN-LINE
PACKAGE
DUAL
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V
DD
P0.0/AD0
P0.1/AD1
P0.2/AD2
P0.3/AD3
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
ALE
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
SU00802
PLASTIC LEADED CHIP CARRIER PIN FUNCTIONS
6140
7
PLCC
17
18 28
Pin Function
1 NC*
2 P1.0
3 P1.1
4 P1.2
5 P1.3
6 P1.4
7 P1.5
8 P1.6
9 P1.7
10 RST
11 P3.0/RxD
12 NC*
13 P3.1/TxD
14 P3.2/INT0
15 P3.3/INT1
* DO NOT CONNECT
Pin Function
16 P3.4/T0
17 P3.5/T1
18 P3.6/WR
19 P3.7/RD
20 XTAL2
21 XTAL1
22 V
SS
23 NC*
24 P2.0/A8
25 P2.1/A9
26 P2.2/A10
27 P2.3/A11
28 P2.4/A12
29 P2.5/A13
30 P2.6/A14
PLASTIC QUAD FLAT PACK PIN FUNCTIONS
44 34
39
29
Pin Function
31 P2.7/A15
32 PSEN
33 ALE
34 NC*
35 EA
36 P0.7/AD7
37 P0.6/AD6
38 P0.5/AD5
39 P0.4/AD4
40 P0.3/AD3
41 P0.2/AD2
42 P0.1/AD1
43 P0.0/AD0
44 V
DD
SU00798
1996 Nov 01
Pin Function
1 P1.5
2 P1.6
3 P1.7
4 RST
5 P3.0/RxD
6V
SS4
7 P3.1/TxD
8 P3.2/INT0
9 P3.3/INT1
10 P3.4/T0
11 P3.5/T1
12 P3.6/WR
13 P3.7/RD
14 XTAL2
15 XTAL1
1
PQFP
11
12 22
Pin Function
16 V
SS1
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
28 V
SS2
29 EA/V
30 P0.7/AD7
PP
33
23
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 V
DD
39 V
SS3
40 P1.0
41 P1.1
42 P1.2
43 P.13
44 P1.4
SU00799
3
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