Rainbow Electronics T89C5121 - Manual (Page 112)

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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