參數資料
型號: UPD17149GTA1
廠商: NEC Corp.
英文描述: SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 小,通用4位單晶片微控制器
文件頁數: 59/102頁
文件大小: 408K
代理商: UPD17149GTA1
59
μ
PD17145(A1), 17147(A1), 17149(A1)
Figure 17-1. Releasing HALT Mode
(a) By RESET input
(b) By RLS input
(c) By IRQ
×××
(in DI status)
(d) By IRQ
×××
(in EI status)
Interrupt processing
acknowledged
IRQ
×××
HALT instruction executed
Operation mode
HALT mode
Operation mode
HALT instruction executed
TM1 counts up
Operation mode
HALT mode
System reset status
WAIT a
Operation mode
(starts from address 0)
WAIT a : Wait time until TM1 counts 256 clocks divided by 128
256
×
128/f
X
(approx. 4 ms at f
X
=8 MHz)
RESET
HALT instruction executed
Operation mode
HALT mode
Operation mode
RLS
IRQ
×××
HALT instruction executed
Operation mode
HALT mode
Operation mode
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