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Microcomputer Components
8-Bit CMOS Microcontroller
C505
C505C/C505A
C505CA
Data Sheet 12.97
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
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.
8-Bit CMOS Microcontroller
Advance Information
C505
C505C
C505A
C505CA
• 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)
Oscillator Watchdog
On-Chip Emulation
Support Module
XRAM
C505 / C505C: 256 Byte
C505A / C505CA: 1 KByte
RAM
256 Byte
Port 0
Port 1
I/O
8 Analog Inputs /
8 Digit. I / O
I/O
I/O
I / O (2-Bit I / O Port)
MCB03628
A / D Converter
C505 / C505C: 8-Bit
C505A / C505CA: 10-Bit
Timer
0
Timer
1
Timer 2
Full-CAN Controller
C505C / C505CA only
C500
Core
8 Datapointers
8-Bit
USART
Port 2
Port 3
Port 4
Program Memory
C505 / C505C: 16 k ROM
C505A / C505CA: 32 k OTP
Watchdog Timer
Figure 1
C505 Functional Units
Semiconductor Group
3
1997-12-01
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
T
A
= 0 to 70
°
C
SAF-C505 versions
T
A
= – 40 to 85
°
C
SAH-C505 versions
T
A
= – 40 to 110
°
C (max. operating frequency: TBD)
SAK-C505 versions
T
A
= – 40 to 125
°
C (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
16 KB
–
16 KB
–
–
–
OTP
–
–
–
–
32 KB
32 KB
256 B
256 B
256 B
256 B
1 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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