ST72321AR9-Auto STMicroelectronics, ST72321AR9-Auto Datasheet - Page 236

• Manufacturer Part Number: ST72321AR9-Auto
• Description: 8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR9-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

Known limitations
236/243
; 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
; store the level before writing to PxOR/PxDDR
LD A,#$90
LD PFDDR,A
; Write into PFDDR
LD A,#$ff
LD PFOR,A
LD A,PFDR
AND A,#$02
LD Y,A
; store the level after writing to PxOR/PxDDR
LD A,X
X,A
; Write to PFOR
Doc ID 13829 Rev 1
ST72321xx-Auto