z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 6
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z8f1621
Manufacturer Part Number
z8f1621
Description
High Performance 8-bit Microcontrollers
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z8F1621.pdf
(297 pages)
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PS019921-0308
Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Timer Control Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Watchdog Timer Control Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 96
UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Interrupt Request 2 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
IRQ0 Enable High and Low Bit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 70
IRQ1 Enable High and Low Bit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 71
IRQ2 Enable High and Low Bit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Interrupt Edge Select Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Interrupt Port Select Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Interrupt Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Timer Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Reading the Timer Count Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Timer Output Signal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Timer 0-3 High and Low Byte Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Timer Reload High and Low Byte Registers . . . . . . . . . . . . . . . . . . . . . . . . 87
Timer 0-3 PWM High and Low Byte Registers . . . . . . . . . . . . . . . . . . . . . . 88
Timer 0-3 Control 0 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Timer 0-3 Control 1 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Watchdog Timer Refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Watchdog Timer Time-Out Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Watchdog Timer Reload Unlock Sequence . . . . . . . . . . . . . . . . . . . . . . . . 95
Watchdog Timer Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Watchdog Timer Reload Upper, High and Low Byte Registers . . . . . . . . . . 97
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Transmitting Data using the Polled Method . . . . . . . . . . . . . . . . . . . . . . . 101
Transmitting Data using the Interrupt-Driven Method . . . . . . . . . . . . . . . . 102
Receiving Data using the Polled Method . . . . . . . . . . . . . . . . . . . . . . . . . 103
Receiving Data using the Interrupt-Driven Method . . . . . . . . . . . . . . . . . . 104
Clear To Send (CTS) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Z8 Encore! XP
Product Specification
®
Table of Contents
F64XX Series
vi
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