ST72321M9 STMicroelectronics, ST72321M9 Datasheet - Page 11

• Manufacturer Part Number: ST72321M9
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72321M9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt,Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

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. It is mandatory to connect all available V
Pin n°
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
PC6/SCK/ICCCLK
PC7/SS/AIN15
PA0
PA1
PA2
PA3 (HS)
V
V
PA4 (HS)
PA5 (HS)
PA6 (HS)/SDAI
PA7 (HS)/SCLI
V
RESET
EVD
TLI
PH4
PH5
PH6
PH7
V
OSC2
OSC1
V
PE0/TDO
PE1/RDI
PE2
PE3
DD_1
SS_1
PP
SS_2
DD_2
/ ICCSEL
3)
3)
2)
2)
2)
2)
Pin Name
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O C
I/O T
I/O T
I/O T
I/O T
I/O
I/O C
I/O C
I/O C
I/O C
S
S
S
S
I
I
I
C
Level
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
HS
HS
HS
HS
HS
DD
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
and V
X
X
X
X
X
X
X
X
X
X
X
X
Input
ei0
ei0
ei0
ei0
REF
X
Port
X
pins to the supply voltage and all V
Output
X
X
X
X
X
X
X
X
T
T
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
function
Port C6
Port C7
Port A0
Port A1
Port A2
Digital Main Supply Voltage
Digital Ground Voltage
Port A4
Port A5
Port A6
Port A7
Must be tied low. In Flash programming
mode, this pin acts as the programming
voltage input V
Top priority non maskable interrupt.
External voltage detector
Top level interrupt input pin
Port H4
Port H5
Port H6
Port H7
Digital Ground Voltage
Resonator oscillator inverter output
External clock input or Resonator oscil-
lator inverter input
Digital Main Supply Voltage
Port E0
Port E1
Port E2
Port E3
Port A3
reset)
(after
Main
ST72321M6 ST72321M9
SPI Serial
Clock
Caution: Negative current
injection not allowed on this
pin
SPI Slave
Select (active
low)
SCI Transmit Data Out
SCI Receive Data In
I
I
2
2
C Data
C Clock
Alternate function
PP
.
5)
5)
ICC Clock
Output
ADC Analog
Input 15
SS
and V
11/175
SSA