UPD17073 NEC, UPD17073 Datasheet - Page 175
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UPD17073
Manufacturer Part Number
UPD17073
Description
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
Manufacturer
NEC
Datasheet
1.UPD17073.pdf
(226 pages)
- Current page: 175 of 226
- Download datasheet (2Mb)
addresses but executes the next instruction even if interrupt by basic timer 1 or INT pin is accepted.
Example 2. Example of program when DI instruction is executed
Because the DI instruction is executed in the above example, the program does not branch to the respective vector
HLTINT
START:
LOOP:
INTBTM1:
DAT
DI
BANK1
SET2
SET1
HALT
SKT1
BR
CLR1
SKT1
BR
CLR1
BR
Processing A
Processing B
1000B
IPBTM1, IP
BTM1CK
HLTINT
IRQ
INTBTM1
IRQ
IRQBTM1
LOOP
IRQBTM1
LOOP
; Symbol definition of halt condition
; Disables all interrupts
; Embedded macro
; Sets time of interrupt by basic timer 1 to 8 ms
; Sets releasing halt status by interrupt
; Detects halt release trigger
;
; Interrupt service by INT pin
; Detects halt release trigger
;
; Interrupt service by basic timer 1
PD17072,17073
175
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