ST72254G1M3(2000_11) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST72254G1M3
(Rev.:2000_11)
(Rev.:2000_11)
STMicroelectronics
ST72254G1M3 Datasheet PDF : 140 Pages
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ST72104G, ST72215G, ST72216G, ST72254G
Pin n°
Pin Name
Level
Port / Control
Input
Main
Output Function
(after reset)
Alternate Function
17 15 PC2/MCO/AIN2
I/O CT X ei0/ei1 X X X Port C2
18 16 PC1/OCMP1_B/AIN1 I/O CT X ei0/ei1 X X X Port C1
19 17 PC0/ICAP1_B/AIN0
20 18 PA7
21 19 PA6 /SDAI
22 20 PA5
23 21 PA4 /SCLI
24 NC
25 NC
I/O CT X ei0/ei1 X X X Port C0
I/O CT HS X
I/O CT HS X
I/O CT HS X
I/O CT HS X
ei0
ei0
ei0
ei0
X X Port A7
T
Port A6
X X Port A5
T
Port A4
Not Connected
Main clock output (fCPU) or
ADC Analog Input 2
Timer B Output Compare 1 or
ADC Analog Input 1
Timer B Input Capture 1 or
ADC Analog Input 0
I2C Data
I2C Clock
26 22 PA3
27 23 PA2
28 24 PA1
29 25 PA0
30 26 ISPSEL
31 27 VSS
32 28 VDD
I/O CT HS X ei0
I/O CT HS X ei0
I/O CT HS X ei0
I/O CT HS X ei0
IC
X
S
S
X X Port A3
X X Port A2
X X Port A1
X X Port A0
In situ programming selection (Should be tied
low in standard user mode).
Ground
Main power supply
Notes:
1. In the interrupt input column, “eiX” defines the associated external interrupt vector. If the weak pull-up
column (wpu) is merged with the interrupt column (int), then the I/O configuration is pull-up interrupt input,
else the configuration is floating interrupt input.
2. In the open drain output column, “T” defines a true open drain I/O (P-Buffer and protection diode to VDD
are not implemented). See Section 10 "I/O PORTS" on page 30 and Section 14.8 "I/O PORT PIN CHAR-
ACTERISTICS" on page 118 for more details.
3. OSC1 and OSC2 pins connect a crystal or ceramic resonator, an external RC, or an external source to
the on-chip oscillator see Section 2 "PIN DESCRIPTION" on page 7 and Section 14.5 "CLOCK AND TIM-
ING CHARACTERISTICS" on page 105 for more details.
9/140
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