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ST72E121 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. ST72E121
Description  8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72E121 Datasheet(HTML) 5 Page - STMicroelectronics

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ST72E121 ST72T121
1.2 PIN DESCRIPTION
Figure 2. 44-Pin Thin QFP Package Pinout
Figure 3. 42-Pin Shrink DIP Package Pinout
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33
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44 43 42 41 40 39 38 37 36 35 34
12 13 14 15 16 17 18 19 20 21 22
PC1/OCMP1_B
PC2/ICAP2_B
PC0/OCMP2_B
PC3/ICAP1_B
PC4/MISO
PC5/MOSI
PB4
PD0
PD1
PD2
PD3
PD4
PC7/SS
PC6/SCK
VSS_1
VDD_1
PA3
PB3
PB2
PB1
PB0
PE1/RDI
(EI3)
(EI2)
(EI2)
(EI2)
(EI2)
(EI0)
1. V
PP
on EPR OM/OTP only
15
16
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CLKOUT/PF0
PF1
PF2
OCMP1_A/PF4
ICAP1_A/PF6
PC1/OCMP1_B
PC2/ICAP2_B
EXTCLK_A/PF7
RESET
TEST/VPP
1)
PA7
PA6
PA5
PC7/SS
PC6/SCK
28
27
26
25
24
23
22
PC0/OCMP2_B
PC3/ICAP1_B
PC4/MISO
PC5/MOSI
PA4
VSS_1
VDD_1
PA3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
29
30
31
32
33
34
PB4
PD0
PD5
PD1
PD2
PD3
PB3
PB2
PB1
PB0
PE0/TD0
VDD_2
OSCIN
OSCOUT
VSS_2
42
41
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39
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36
35
PD4
VDD_3
VSS_3
PE1/RDI
(EI3)
(EI1)
(EI1)
(EI1)
(EI0)
(EI2)
(EI2)
(EI2)
(EI2)
1. V
PP
on EPR OM/OTP only
5


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