C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 5
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C505_9708
Manufacturer Part Number
C505_9708
Description
8-Bit CMOS Microcontroller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.C505_9708.pdf
(227 pages)
- Current page: 5 of 227
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Table of Contents
6.4.2
6.4.2.1
6.4.2.2
6.4.3
6.4.4
6.4.5
6.4.5.1
6.4.5.2
6.4.6
6.4.7
6.4.8
6.4.9
6.4.10
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.5.5
7
7.1
7.1.1
7.1.2
7.1.3
7.2
7.3
7.4
7.5
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.2
9
9.1
9.2
9.3
9.4
9.4.1
9.4.2
9.5
Semiconductor Group
CAN Register Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
General Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-65
The Message Object Registers / Data Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-75
Handling of Message Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-81
Initialization and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-88
Configuration of the Bit Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-90
Hard Synchronization and Resynchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-92
Calculation of the Bit Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-92
CAN Interrupt Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-93
CAN Controller in Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-94
Configuration Examples of a Transmission Object . . . . . . . . . . . . . . . . . . . . . . . . . 6-95
Configuration Examples of a Reception Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-96
The CAN Application Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-97
A/D Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-98
A/D Converter Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-98
A/D Converter Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-100
A/D Converter Clock Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-104
A/D Converter Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-105
A/D Converter Analog Input Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-109
Interrupt System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Interrupt Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Interrupt Enable Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Interrupt Request / Control Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Interrupt Priority Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Interrupt Priority Level Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
How Interrupts are Handled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
External Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Interrupt Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
Fail Save Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Programmable Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Input Clock Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Watchdog Timer Control / Status Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Starting the Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Refreshing the Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Watchdog Reset and Watchdog Status Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Oscillator Watchdog Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Power Saving Mode Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Idle Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Slow Down Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Software Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Invoking Software Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Exit from Software Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
State of Pins in Software Initiated Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . 9-8
I-3
General Information
C505 / C505C
1997-08-01
Page
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