Data Sheet 08.94
Microcomputer Components
C502
8-Bit CMOS Microcontroller
ht
tp://www
.siemens.de/
Semiconductor/
Semiconductor Group
1
08.94
8-Bit CMOS Microcontroller
Preliminary
C502
q
Fully compatible to standard 8051 microcontroller
q
Versions for 12 / 20 MHz operating frequency
q
16 K
8 ROM (SAB-C502-2R only)
q
256
8 RAM
q
256
8 XRAM (additional on-chip RAM)
q
Eight datapointers for indirect addressing of program and external data memory
(including XRAM)
q
Four 8-bit ports
q
Three 16 -bit Timers / Counters (Timer 2 with Up/Down Counter feature)
q
USART with programmable 10-bit Baudrate-Generator
q
Six interrupt sources, two priority levels
q
Programmable 15-bit Watchdog Timer
q
Oscillator Watchdog
q
Fast Power On Reset
q
Power Saving Modes
q
P-DIP-40 package and P-LCC-44 package
q
Temperature ranges:
SAB-C502
T
A
: 0 C to 70 C
SAF-C502
T
A
: 40 C to 85 C
SAB-C502
Semiconductor Group
2
C502
The SAB-C502-L/C502-2R described in this document is compatible with the SAB 80C52 and can
be used for all present SAB 80C52 applications.
The SAB-C502-2R contains a non-volatile 16 K
8 read-only program memory, a volatile 256
8
read/write data memory, four ports, three 16-bit timers/counters, a six source, two priority level
interrupt structure, a serial port and versatile fail save mechanisms. The SAB-C502-L/C502-2R
incorporates 256
8 additional on-chip RAM called XRAM. For higher performance eight
datapointers are implemented. The SAB-C502-L is identical, except that it lacks the program
memory on chip. Therefore the term SAB-C502 refers to both versions within this specification
unless otherwise noted.
Semiconductor Group
3
C502
Ordering Information
Note: Extended temperature range 40 C to 110 C (SAH-C502) on request.
Type
Ordering
Code
Package
Description
(8-Bit CMOS microcontroller)
SAB-C502-LN
SAB-C502-LP
Q67120-C838
Q67120-C889
P-LCC-44
P-DIP-40
for external memory 12 MHz
SAB-C502-2RN
SAB-C502-2RP
Q67120-C839
Q67120-C890
P-LCC-44
P-DIP-40
with mask-programmable ROM,
12 MHz
SAB-C502-L20N
SAB-C502-L20P
Q67120-C885
Q67120-C891
P-LCC-44
P-DIP-40
for external memory 20 MHz
SAB-C502-2R20N
SAB-C502-2R20P
Q67120-C884
Q67120-C892
P-LCC-44
P-DIP-40
with mask-programmable ROM,
20 MHz
SAF-C502-LN
SAF-C502-LP
Q67120-C883
Q67120-C893
P-LCC-44
P-DIP-40
for external ROM, 12 MHz,
ext. temp. 40 C to 85 C
SAF-C502-2RN
SAF-C502-2RP
Q67120-C886
Q67120-C894
P-LCC-44
P-DIP-40
with mask-programmable ROM,
12 MHz, ext. temp. 40 C to 85 C
SAF-C502-L20N
SAF-C502-L20P
Q67120-C887
Q67120-C895
P-LCC-44
P-DIP-40
for external memory, 20 MHz,
ext. temp. 40 C to 85 C
SAF-C502-2R20N
SAF-C502-2R20P
Q67120-C888
Q67120-C896
P-LCC-44
P-DIP-40
with mask-programmable ROM,
20 MHz, ext. temp. 40 C to 85 C
Semiconductor Group
4
Pin Configuration
(top view)
(P-LCC-44)
C502
PDF 
ZIP