ST6225C STMicroelectronics, ST6225C Datasheet - Page 39

• Manufacturer Part Number: ST6225C
• Description: 8 Bit ST6 Microcontroller with 16x8-bitADC 1x8-bit TIMER
• Manufacturer: STMicroelectronics

Specifications of ST6225C

• Clock Sources: crystal/ceramic resonator or RC network, external clock, backup oscillator (LFAO)
• 2 Power Saving Modes: Wait and Stop

I/O PORTS (Cont’d)
Figure 23. I/O Port Block Diagram
Table 8. I/O Port Configurations
Note: x = Don’t care
DDR
INTERNAL
0
0
0
0
1
1
BUS
ST6
TO INTERRUPT
OR
0
0
1
1
0
1
TO ADC
RESET
DR
0
1
0
1
x
x
DIRECTION
REGISTER
REGISTER
REGISTER
OPTION
DATA
DATA
Output
Output
Mode
Input
Input
Input
Input
With pull-up, no interrupt
No pull-up, no interrupt
With pull-up and with interrupt
Analog input (when available)
Open-drain output (20mA sink when available)
Push-pull output (20mA sink when available)
P-BUFFER
PULL-UP
SCHMITT
TRIGGER
CMOS
N-BUFFER
V
DD
Option
V
DD
CLAMPING
DIODES
V
ST6215C ST6225C
DD
Pxx I/O Pin
39/105
1