ST72561J9-Auto STMicroelectronics, ST72561J9-Auto Datasheet - Page 317

• Manufacturer Part Number: ST72561J9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72561J9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years at 55 °C
• 5 Power Saving Modes: halt, auto wake up from halt, active halt, wait and slow

ST72561-Auto
Important notes
LD A, PFDR
AND A, #02
LD Y, A; store the level after writing to PxOR/PxDDR
LD A, X; check for falling edge
cp A, #02
jrne OUT
TNZ Y
jrne OUT
LD A, sema; check the semaphore status if edge is detected
CP A, #01
jrne OUT
call call_routine; call the interrupt routine
OUT:LD A,#00
LD sema, A
.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
Case 2: writing to PxOR or PxDDR with global interrupts disabled:
SIM; set the interrupt mask
LD A, PFDR
AND A, #$02
LD
X, A; store the level before writing to PxOR/PxDDR
LD A, #$90
LD PFDDR, A; write into PFDDR
LD A, #$ff
LD PFOR, A; write to PFOR
LD A, PFDR
AND A, #$02
LD Y, A; store the level after writing to PxOR/PxDDR
LD A, X; 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; reset the interrupt mask
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
Doc ID 12370 Rev 8
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