Owner's manual

i
4164G–SCR–07/06
A/T8xC5121
Table of
Contents
Features ................................................................................................. 1
Description ............................................................................................ 2
Block Diagram ...................................................................................... 2
Pin Description ..................................................................................... 3
Signals...................................................................................................................5
Port Structure Description....................................................................................10
SFR Mapping ....................................................................................... 12
PowerMonitor ...................................................................................... 14
Description.......................................................................................................... 14
PowerMonitor Diagram....................................................................................... 14
Power Monitoring and Clock Management ...................................... 16
Idle Mode............................................................................................................ 16
Power-down Mode.............................................................................................. 16
Clock Management............................................................................. 22
Functional Block Diagram................................................................................... 22
X2 Feature...........................................................................................................23
Clock Prescaler....................................................................................................24
Clock Control Registers...................................................................................... 24
DC/DC Clock ....................................................................................... 27
Clock Control Register........................................................................................ 27
Clock Prescaler................................................................................................... 27
Smart Card Interface Block (SCIB) ................................................... 29
Introduction......................................................................................................... 29
Main Features..................................................................................................... 29
Block Diagram .....................................................................................................30
Functional Description........................................................................................ 30
Other Features.....................................................................................................35
DC/DC Converter.................................................................................................37
Registers Description...........................................................................................38
Interrupt System ................................................................................. 47
INT1 Interrupt Vector.......................................................................................... 48
LED Ports Configuration .................................................................... 57
Registers Definition............................................................................................. 57
Dual Data Pointer ................................................................................ 58