ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 270
ST72521R9-Auto
Manufacturer Part Number
ST72521R9-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST72521R9-AUTO.pdf
(276 pages)
Specifications of ST72521R9-Auto
Hdflash Endurance
100 cycles, data retention 20 years
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
4 Power Saving Modes
Halt, Active Halt, Wait and Slow
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Known limitations
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; check for falling edge
cp A,#$02
jrne OUT
TNZ Y
jrne OUT
LD A,#$01
LD sema,A
; set the semaphore to '1' if edge is detected
RIM
LD A,sema
; check the semaphore status
CP A,#$01
jrne OUT
call call_routine
; call the interrupt routine
RIM
OUT:
RIM
JP while_loop
.call_routine
; entry to call_routine
PUSH A
PUSH X
PUSH CC
.ext1_rt
; entry to interrupt routine
LD A,#$00
LD sema,A
IRET
; reset the interrupt mask
Doc ID 17660 Rev 1
ST72521xx-Auto
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