参数资料
型号: mPD789322
厂商: NEC Corp.
元件分类: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器与2/4/8K字节在系统可编程闪存
文件页数: 30/96页
文件大小: 482K
代理商: MPD789322
Preliminary Product Information U14673EJ1V0PM00
36
PD789322,789324,789326,789327
(4) 8-bit timer counter 30, 40 (TM30, TM40)
This is an 8-bit register for counting the count pulses.
TM30 and TM40 can be read with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets these registers to 00H.
The conditions under which TM30 and TM40 are cleared to 00H are listed below.
(a) Discrete mode
(i)
TM30
Upon a reset
When TCE30 (bit 7 of 8-bit timer mode control register 30 (TMC30)) is cleared to 0
Upon a match between TM30 and CR30
If the TM30 count value overflows
(ii) TM40
Upon a reset
When TCE40 (bit 7 of 8-bit timer mode control register 40 (TMC40)) is cleared to 0
Upon a match between TM40 and CR40
If the TM40 count value overflows
(b) Cascade connection mode (TM30 and TM40 cleared to 00H simultaneously)
Upon a reset
When the TCE40 flag is cleared to 0
Upon a simultaneous match between TM30 and CR30, and TM40 and CR40
If the TM30 and TM40 count values overflow simultaneously
(c) Carrier generator/PWM output mode (TM40 only)
Upon a reset
When the TCE40 flag is cleared to 0
Upon a match between TM40 and CR40
Upon a match between TM40 and CRH40
If the TM40 count value overflows
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