ST72321BXXX-AUTO View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72321BXXX-AUTO

8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface

STMicroelectronics 

Package pinout and pin description

ST72321Bxxx-Auto

Table 2.

Pin No.

Device pin description (continued)

Level

Port

Pin name

Input

Output

Main

function

(after

reset)

Alternate function

41 29 PC6/SCK/ICCCLK I/O CT

XX

X

42 30 PC7/SS/AIN15

43

-

(1)(2)

PA0

44

-

(2)(1)

PA1

45

-

(1)(2)

PA2

46 31 PA3(HS)

47 32 VDD_1(3)

48 33 VSS_1(3)

49 34 PA4(HS)

50 35 PA5(HS)

51 36 PA6(HS)/SDAI

52 37 PA7(HS)/SCLI

I/O CT

XX

XX

I/O CT

X ei0

X

I/O CT

X ei0

X

I/O CT

X ei0

X

I/O CT HS X

ei0

X

S

S

I/O CT HS X X

X

I/O CT HS X X

X

I/O CT HS X

T

I/O CT HS X

T

53 38 VPP/ ICCSEL

I

54 39 RESET

55 - EVD

56 - TLI

57 40 VSS_2(3)

58 41 OSC2(5)

59 42 OSC1(5)

60 43 VDD_2(3)

61 44 PE0/TDO

I/O CT

IA

I CT

X

S

I/O

I

S

I/O CT

XX

X

SPI Serial ICC Clock

Clock

Output

X Port C6 Caution: Negative

current injection not

allowed on this pin

(Flash devices only)

SPI Slave ADC

X Port C7 Select

Analog

(active low) Input 15

X Port A0

X Port A1

X Port A2

X Port A3

Digital Main Supply Voltage

Digital Ground Voltage

X Port A4

X Port A5

Port A6

Port A7

I2C Data

I2C Clock

Must be tied low. In Flash

programming mode, this pin acts

as the programming voltage input

VPP. See Section 19.9.2:

ICCSEL/VPP pin for more details.

High voltage must not be applied

to ROM devices.

Top priority non-maskable interrupt

External voltage detector

Top level interrupt input pin

Digital Ground Voltage

Resonator oscillator inverter output

External clock input or Resonator

oscillator inverter input

Digital Main Supply Voltage

X Port E0 SCI Transmit Data Out

30/247

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