Z51F3220FNX Datasheet, PDF (5/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
9.6 P3 Port ........................................................................................................................................................... 70
9.7 P4 Port ........................................................................................................................................................... 71
9.8 P5 Port ........................................................................................................................................................... 72
9.9 Port Function.................................................................................................................................................. 73
10. Interrupt Controller.............................................................................................................................................. 82
10.1 Overview ...................................................................................................................................................... 82
10.2 External Interrupt ......................................................................................................................................... 83
10.3 Block Diagram ............................................................................................................................................. 84
10.4 Interrupt Vector Table .................................................................................................................................. 85
10.5 Interrupt Sequence ...................................................................................................................................... 85
10.6 Effective Timing after Controlling Interrupt Bit ............................................................................................ 87
10.7 Multi Interrupt ............................................................................................................................................... 88
10.8 Interrupt Enable Accept Timing ................................................................................................................... 89
10.9 Interrupt Service Routine Address .............................................................................................................. 89
10.10 Saving/Restore General-Purpose Registers ............................................................................................. 89
10.11 Interrupt Timing.......................................................................................................................................... 90
10.12 Interrupt Register Overview....................................................................................................................... 90
10.13 Interrupt Register Description.................................................................................................................... 92
11. Peripheral Hardware........................................................................................................................................... 99
11.1 Clock Generator........................................................................................................................................... 99
11.2 Basic Interval Timer ................................................................................................................................... 102
11.3 Watch Dog Timer....................................................................................................................................... 105
11.4 Watch Timer............................................................................................................................................... 108
11.5 Timer 0 ....................................................................................................................................................... 111
11.6 Timer 1 ....................................................................................................................................................... 120
11.7 Timer 2 ....................................................................................................................................................... 130
11.8 Timer 3, 4................................................................................................................................................... 141
11.9 Buzzer Driver ............................................................................................................................................. 170
11.10 SPI 2 ........................................................................................................................................................ 172
11.11 12-Bit A/D Converter ............................................................................................................................... 178
11.12 USI0 (UART + SPI + I2C)........................................................................................................................ 185
11.13 USI1 (UART + SPI + I2C)........................................................................................................................ 222
11.15 LCD Driver ............................................................................................................................................... 260
12. Power Down Operation .................................................................................................................................... 272
12.1 Overview .................................................................................................................................................... 272
12.2 Peripheral Operation in IDLE/STOP Mode ............................................................................................... 272
12.3 IDLE Mode ................................................................................................................................................. 273
12.4 STOP Mode ............................................................................................................................................... 274
12.5 Release Operation of STOP Mode............................................................................................................ 275
13. RESET .............................................................................................................................................................. 277
13.1 Overview .................................................................................................................................................... 277
13.2 Reset Source ............................................................................................................................................. 277
13.3 RESET Block Diagram .............................................................................................................................. 277
13.4 RESET Noise Canceller ............................................................................................................................ 278
13.5 Power on RESET....................................................................................................................................... 278
13.6 External RESETB Input ............................................................................................................................. 281
13.7 Brown Out Detector Processor.................................................................................................................. 282
13.8 LVI Block Diagram ..................................................................................................................................... 283
14. On-chip Debug System .................................................................................................................................... 287
14.1 Overview .................................................................................................................................................... 287
14.2 Two-Pin External Interface ........................................................................................................................ 288
15. Flash Memory ................................................................................................................................................... 293
PS029902-0212
PRELIMINARY
2