Data Sheet 04.97
Microcomputer Components
C501
8-Bit CMOS Microcontroller
Edition 1997-04-01
Published by
Siemens AG,
Bereich Halbleiter, Marketing-
Kommunikation, Balanstrae 73,
81541 Mnchen
Siemens AG 1997.
All Rights Reserved.
Attention please!
As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes
and circuits implemented within components or assemblies.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved.
For questions on technology, delivery and prices please contact the Semiconductor Group Offices in Germany or the Siemens Companies
and Representatives worldwide (see address list).
Due to technical requirements components may contain dangerous substances. For information on the types in question please contact
your nearest Siemens Office, Semiconductor Group.
Siemens AG is an approved CECC manufacturer.
Packing
Please use the recycling operators known to you. We can also help you get in touch with your nearest sales office. By agreement we will
take packing material back, if it is sorted. You must bear the costs of transport.
For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs in-
curred.
Components used in life-support devices or systems must be expressly authorized for such purpose!
Critical components
1
of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems
2
with the express
written approval of the Semiconductor Group of Siemens AG.
1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the
failure of that life-support device or system, or to affect its safety or effectiveness of that device or system.
2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain hu-
man life. If they fail, it is reasonable to assume that the health of the user may be endangered.
C501 Data Sheet
Revision History :
1997-04-01
Previous Releases :
11.92, 11.93, 08.94, 08.95, 10.96
Page
(previous
version)
Page
(new
version)
Subjects (changes since last revision)
general
C501G-1E OTP version included
4
5
5-7
11
8, 9, 10
13
14
-
15-18
17
-
-
41
-
4
5
5-7
11
8, 9, 10
13
14
15
16-18
17
25-28
31
41
43, 44
Ordering information resorted and C501G-1E types added
Table with literature hints added
Pin configuration logic symbol for pins EA/Vpp and ALE/PROG updated
Pin description for ALE/PROG and EA/Vpp completed
Port 1, 3, 2 pin description: "bidirectional" replaced by "quasi-
bidirectional"
Block diagram updated for C501G-1E
New design of register (PSW) description
"Memory organization" added
Actualized design of the SFR tables
Reset value of T2CON corrected
Description for the C501-1E OTP version added
DC characteristics for C501-1E added
Timing "External Clock Drive" now behind "Data Memory Cycle"
AC characteristics for C501-1E added
C501
Semiconductor Group
3
1997-04-01
8-Bit CMOS Microcontroller
Preliminary
C501
Fully compatible to standard 8051 microcontroller
Versions for 12/24/40 MHz operating frequency
Program memory : completely external (C501-L)
8K
8 ROM (C501-1R)
8K
8 OTP memory (C501-1E)
256
8 RAM
Four 8-bit ports
Three 16-bit timers / counters (timer 2 with up/down counter feature)
USART
Six interrupt sources, two priority levels
Power saving modes
Quick Pulse programming algorithm (C501-1E only)
2-Level program memory lock (C501-1E only)
P-DIP-40, P-LCC-44, and P-MQFP-44 package
Temperature ranges :
SAB-C501
T
A
: 0
C to 70
C
SAF-C501
T
A
: 40
C to 85
C
Figure 1
C501G Functional Units
MCA03238
Port 0
Port 1
Port 2
Port 3
RAM
256 x 8
CPU
T0
T1
USART
Power
Saving
8K x 8 OTP (C501-1E)
T2
Modes
8K x 8 ROM (C501-1R)
/O
/O
/O
/O
C501
Semiconductor Group
4
1997-04-01
The C501-1R contains a non-volatile 8K
8 read-only program memory, a volatile 256
8 read/
write data memory, four ports, three 16-bit timers counters, a seven source, two priority level
interrupt structure and a serial port. The C501-L is identical, except that it lacks the program
memory on chip. The C501-1E contains a one-time programmable (OTP) program memory on chip.
The term C501 refers to all versions within this specification unless otherwise noted. Further, the
term C501 refers to all versions which are available in the different temperature ranges, marked with
SAB-C501... or SAF-C501....
.
Ordering Information
Type
Ordering Code Package
Description
(8-Bit CMOS microcontroller)
SAB-C501G-LN
SAB-C501G-LP
SAB-C501G-LM
Q67120-C969
Q67120-C968
Q67127-C970
P-LCC-44
P-DIP-40
P-MQFP-44
for external memory (12 MHz)
SAB-C501G-L24N
SAB-C501G-L24P
SAB-C501G-L24M
Q67120-C1001
Q67120-C999
Q67127-C1014
P-LCC-44
P-DIP-40
P-MQFP-44
for external memory (24 MHz)
SAB-C501G-L40N
SAB-C501G-L40P
SAB-C501G-L40M
Q67120-C1002
Q67120-C1000
Q67127-C1009
P-LCC-44
P-DIP-40
P-MQFP-44
for external memory (40 MHz)
SAF-C501G-L24N
SAF-C501G-L24P
Q67120-C1011
Q67120-C1010
P-LCC-44
P-MQFP-44
for external memory (24 MHz)
ext. temp. 40 C to 85 C
SAB-C501G-1RN
SAB-C501G-1RP
SAB-C501G-1RM
Q67120-DXXX
Q67120-DXXX
Q67127-DXXX
P-LCC-44
P-DIP-40
P-MQFP-44
with mask-programmable ROM (12 MHz)
SAB-C501G-1R24N
SAB-C501G-1R24P
SAB-C501G-1R24M
Q67120-DXXX
Q67120-DXXX
Q67127-DXXX
P-LCC-44
P-DIP-40
P-MQFP-44
with mask-programmable ROM (24 MHz)
SAB-C501G-1R40N
SAB-C501G-1R40P
SAB-C501G-1R40M
Q67120-DXXX
Q67120-DXXX
Q67127-DXXX
P-LCC-44
P-DIP-40
P-MQFP-44
with mask-programmable ROM (40 MHz)
SAF-C501G-1R24N
SAF-C501G-1R24P
Q67120-DXXX
Q67120-DXXX
P-LCC-44
P-DIP-40
with mask-programmable ROM (24 MHz)
ext. temp. 40 C to 85 C
SAB-C501G-1EN
SAB-C501G-1EP
Q67120-C1054
Q67120-C1056
P-LCC-44
P-DIP-40
with OTP memory (12 MHz)
SAF-C501G-1EN
SAF-C501G-1EP
Q67120-C2002
Q67120-C2003
P-LCC-44
P-DIP-40
with OTP memory (12 MHz))
ext. temp. 40
C to 85
C
SAB-C501G-1E24N
SAB-C501G-1E24P
Q67120-C2005
Q67120-C2006
P-LCC-44
P-DIP-40
with OTP memory (24 MHz)
SAF-C501G-1E24N
SAF-C501G-1E24P
Q67120-C2008
Q67120-C2009
P-LCC-44
P-DIP-40
with OTP memory (24 MHz))
ext. temp. 40
C to 85
C
Semiconductor Group
5
1997-04-01
C501
Note:
Versions for extended temperature range 40
C to 110
C (SAH-C501G) on request.
The ordering number of ROM types (DXXX extensions) is defined after program release
(verification) of the customer.
Additional Literature
For further information about the C501 the following literature is available :
Figure 2
Pin Configuration P-LCC-44 Package (Top view)
Title
Ordering Number
C501 8-Bit CMOS Microcontroller User's Manual
B158-H6723-X-X-7600
C500 Microcontroller Family
Architecture and Instruction Set User's Manual
B158-H6987-X-X-7600
C500 Microcontroller Family - Pocket Guide
B158-H6986-X-X-7600
MCP03214
6
5
4
3
2
1 44 43 42 41 40
28
27
26
25
24
23
22
21
20
19
18
29
30
31
32
33
34
35
36
37
38
39
7
8
9
10
11
12
13
14
15
16
17
P1.5
P1.6
P1.7
RxD/P3.0
N.C.
TxD/P3.1
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
WR/P3.6
RD/P3.7
XTAL2
XTAL1
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.5/A13
P2.6/A14
P2.7/A15
PSEN
ALE/PROG
EA/
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
N.C
P1.3
P1.4
C501
N.C.
V
CC
V
SS
RESET
P0.7/AD7
P1.2
P1.0/T2
P1.1/T2EX
P2.4/A12
N.C.
V
PP
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