ST72F361J7T3 STMicroelectronics, ST72F361J7T3 Datasheet - Page 219
![IC MCU 8BIT 48K FLASH 44-LQFP](/photos/6/84/68458/497-44-tqfp_44-lqfp_sml.jpg)
ST72F361J7T3
Manufacturer Part Number
ST72F361J7T3
Description
IC MCU 8BIT 48K FLASH 44-LQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST72F361K6T6.pdf
(225 pages)
Specifications of ST72F361J7T3
Core Processor
ST7
Core Size
8-Bit
Speed
8MHz
Connectivity
LINSCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
44-LQFP
Processor Series
ST72F3x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
LINSCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
34
Number Of Timers
2
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ST72F36X-SK/RAIS, STX-RLINK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 11 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST72F361J7T3
Manufacturer:
STMicroelectronics
Quantity:
10 000
- Current page: 219 of 225
- Download datasheet (8Mb)
IMPORTANT NOTES (Cont’d)
software sequence is given for both cases (global
interrupt disabled/enabled).
Case 1: Writing to PxOR or PxDDR with Global In-
terrupts Enabled:
LD A,#01
LD sema,A
LD A,PFDR
AND A,#02
LD X,A
PxOR/PxDDR
LD A,#$90
LD PFDDR,A ; Write to PFDDR
LD A,#$ff
LD PFOR,A
LD A,PFDR
AND A,#02
LD Y,A
PxOR/PxDDR
LD A,X
cp A,#02
jrne OUT
TNZ Y
jrne OUT
LD A,sema
edge is detected
CP A,#01
jrne OUT
call call_routine; call the interrupt routine
OUT:LD A,#00
LD sema,A
.call_routine
PUSH A
PUSH X
PUSH CC
.ext1_rt
LD A,#00
LD sema,A
IRET
Case 2: Writing to PxOR or PxDDR with Global In-
terrupts Disabled:
SIM
LD A,PFDR
AND A,#$02
; set the interrupt mask
; set the semaphore to '1'
; store the level before writing to
; store the level after writing to
; check for falling edge
; check the semaphore status if
; entry to call_routine
; entry to interrupt routine
; Write to PFOR
LD X,A
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
PxDDR
LD A,X
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:
JP while_loop
.call_routine ; entry to call_routine
PUSH A
PUSH X
PUSH CC
.ext1_rt
LD A,#$00
LD sema,A
IRET
16.1.4 Unexpected Reset Fetch
If an interrupt request occurs while a "POP CC" in-
struction is executed, the interrupt controller does
not recognise the source of the interrupt and, by
default, passes the RESET vector address to the
CPU.
Workaround
To solve this issue, a "POP CC" instruction must
always be preceded by a "SIM" instruction.
; store the level before writing to
; store the level after writing to PxOR/
; check for falling edge
RIM
; entry to interrupt routine
; reset the interrupt mask
; Write to PFOR
ST72361
219/225
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