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Microcomputer Components
8-Bit CMOS Microcontroller
C505
C505C/C505A
C505CA
Data Sheet 12.97

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Edition 12.97
Published by Siemens AG,
Bereich Halbleiter, Marketing-
Kommunikation, Balanstraße 73,
81541 München
© 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
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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 components1 of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems2 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.

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8-Bit CMOS Microcontroller
Advance Information
• Fully compatible to standard 8051 microcontroller
• Superset of the 8051 architecture with 8 datapointers
• Up to 20 MHz operating frequency
– 375 ns instruction cycle time @16 MHz
– 300 ns instruction cycle time @20 MHz (50 % duty cycle)
• On-chip program memory (with optional memory protection)
– C505-2R/C505C-2R : 16k byte on-chip ROM
– C505A-4E/C505CA-4E: 32k byte on-chip OTP
– alternatively up to 64k byte external program memory
• 256 byte on-chip RAM
• On-chip XRAM
– C505/C505C : 256 byte
– C505A/C505CA : 1K byte
• 32 + 2 digital I/O lines
– Four 8-bit digital I/O ports
– One 2-bit digital I/O port (port 4)
– Port 1 with mixed analog/digital I/O capability
(more features on next page)
C505
C505C
C505A
C505CA
Oscillator Watchdog
A / D Converter
C505 / C505C: 8-Bit
C505A / C505CA: 10-Bit
Timer 2
Full-CAN Controller
C505C / C505CA only
Watchdog Timer
XRAM
C505 / C505C: 256 Byte
C505A / C505CA: 1 KByte
RAM
256 Byte
Timer C500
0 Core 8-Bit
Timer
1
8 Datapointers
USART
Program Memory
C505 / C505C: 16 k ROM
C505A / C505CA: 32 k OTP
Port 0
Port 1
Port 2
Port 3
Port 4
Figure 1
C505 Functional Units
I/O
8 Analog Inputs /
8 Digit. I / O
I/O
I/O
I / O (2-Bit I / O Port)
MCB03628
Semiconductor Group
3
1997-12-01

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C505 / C505C
C505A / C505CA
Features (cont’d):
• Three 16-bit timers/counters
– Timer 0 / 1 (C501 compatible)
– Timer 2 with 4 channels for 16-bit capture/compare operation
• Full duplex serial interface with programmable baudrate generator (USART)
• Full CAN Module, version 2.0 B compliant (C505C and C505CA only)
– 256 register/data bytes located in external data memory area
– 1 MBaud CAN baudrate when operating frequency is equal to or above 8 MHz
– internal CAN clock prescaler when input frequency is over 10 MHz
• On-chip A/D Converter
– up to 8 analog inputs
– C505/C505C : 8-bit resolution
– C505A/C505CA: 10-bit resolution
• Twelve interrupt sources with four priority levels
• On-chip emulation support logic (Enhanced Hooks Technology TM 1))
• Programmable 15-bit watchdog timer
• Oscillator watchdog
• Fast power on reset
• Power Saving Modes
– Slow-down mode
– Idle mode (can be combined with slow-down mode)
– Software power-down mode with wake up capability through P3.2/INT0 or P4.1/RXDC pin
• P-MQFP-44 package
• Pin configuration is compatible to C501, C504, C511/C513-family
• Temperature ranges:
SAB-C505 versions
SAF-C505 versions
SAH-C505 versions
SAK-C505 versions
TA = 0 to 70 °C
TA = – 40 to 85 °C
TA = – 40 to 110 °C
TA = – 40 to 125 °C
(max. operating frequency: TBD)
(max. operating frequency: 12 MHz
with 50% duty cycle)
Table 1
Differences in Functionality of the C505 MCUs
Device
C505-2RM
C505-LM
C505C-2RM
C505C-LM
C505A-4EM
C505CA-4EM
Internal Program Memory XRAM Size
ROM
OTP
16 KB
256 B
256 B
16 KB
256 B
256 B
32 KB
1 KB
32 KB
1 KB
A/D Converter
Resolution
8 Bit
8 Bit
8 Bit
8 Bit
10 Bit
10 Bit
CAN
Controller



1) “Enhanced Hooks Technology” is a trademark and patent of Metalink Corporation licensed to Siemens.
Semiconductor Group
4
1997-12-01

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C505 / C505C
C505A / C505CA
Table 2
Ordering Information
Type
SAB-C505-2RM
SAB-C505-LM
SAF-C505-2RM
SAF-C505-LM
SAB-C505C-2RM
SAB-C505C-LM
SAF-C505C-2RM
SAF-C505C-LM
SAB-C505A-4EM
SAF-C505A-4EM
SAB-C505CA-4EM
SAB-C505CA-4EM
Ordering Code Package Description
(8-Bit CMOS microcontroller)
Q67127-DXXXX P-MQFP-44 with mask-programmable ROM (16K), 20 MHz
Q67127-C2057 P-MQFP-44 for external memory (20 MHz)
Extended temperature. – 40 °C to 85 °C :
Q67127-DXXXX P-MQFP-44 with mask-programmable ROM (16K), 20 MHz
Q67127-C2056 P-MQFP-44 for external memory (20 MHz)
Q67127-DXXXX P-MQFP-44 with mask-progr. ROM (16K) and CAN, 20 MHz
Q67127-C2029 P-MQFP-44 for external memory, with CAN (20 MHz)
Extended temperature. – 40 °C to 85 °C :
Q67127-DXXXX P-MQFP-44 with mask-progr. ROM (16K) and CAN, 20 MHz
Q67127-C2030 P-MQFP-44 for external memory, with CAN (20 MHz)
Q67127-C2060 P-MQFP-44 with OTP memory (32K), 20 MHz
Extended temperature. – 40 °C to 85 °C :
Q67127-C2061 P-MQFP-44 with OTP memory (32K), 20 MHz
Q67127-C1082 P-MQFP-44 with OTP memory (32K) and CAN, 20 MHz
Extended temperature. – 40 °C to 85 °C :
Q67127-C2058 P-MQFP-44 with OTP memory (32K) and CAN, 20 MHz
Note: The ordering number of the ROM types (DXXXX extension) is defined after program release
(verification) of the customer.
Versions for the extended temperature range – 40 °C to 110 °C (SAH-C505) and – 40 °C to
125 °C (SAK-C505) are available on request.
Semiconductor Group
5
1997-12-01