ST72264G2 STMicroelectronics, ST72264G2 Datasheet - Page 42

• Manufacturer Part Number: ST72264G2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72264G2

• 4 K Or 8 Kbytes Program Memory: ROM or single voltage extended Flash (XFlash) with read-out protection, write protection, In-Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt,Wait and Slow
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes

ST72260Gx, ST72262Gx, ST72264Gx
I/O PORTS (Cont’d)
9.7 DEVICE-SPECIFIC I/O PORT CONFIGURATION
The I/O port register configurations are summa-
rised as follows.
Interrupt Ports
PA7, PA5, PA3:0, PB7:0, PC5:0 (with pull-up)
Table 9. Port Configuration
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floating input
pull-up interrupt input
open drain output
push-pull output
Port C
Port A
Port B
Port
PA7
PA6
PA5
PA4
PA3:0
PB7:0
PC5:0
Pin Name
MODE
OR = 0
floating
floating
floating
floating
floating
floating
floating
Input (DDR = 0)
DDR
0
0
1
1
floating interrupt
floating interrupt
pull-up interrupt
pull-up interrupt
pull-up interrupt
pull-up interrupt
pull-up interrupt
OR
OR = 1
0
1
0
1
True Open Drain Interrupt Ports
PA6, PA4 (without pull-up)
floating input
floating interrupt input
open drain (high sink ports)
open drain
open drain
open drain
open drain
open drain
OR = 0
true open-drain
true open-drain
MODE
Output (DDR = 1)
push-pull
push-pull
push-pull
push-pull
push-pull
OR = 1
DDR
0
0
1
High-Sink
Yes
No
OR
X
0
1