UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 14

• Manufacturer Part Number: UPSD3254
• Description: Flash Programmable System Devices with 8032 Microcontroller Core
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
Figure 4. TQFP80 Connections
Note: NC = Not Connected
14/175
P3.3 /EXINT1
P4.7 / PWM4
P4.6 / PWM3
1. Pull-up resistor required on pin 8 (2k
2. Pin 10 is Not Connected (NC) for device with no USB function.
PD0, ALE
USB+
USB-
GND
V CC
PD2
PD1
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
(1)
(2)
for 3V devices, 7.5k
for 5V devices) for all 82-pin devices, with or without USB function.
60 P1.5 / ADC1
59 P1.4 / ADC0
58 P1.3 / TXD1
57 P2.3, A11
56 P1.2 / RXD1
55 P2.2, A10
54 P1.1 / T2X
53 P2.1, A9
52 P1.0 / T2
51 P2.0, A8
50 V CC
49 XTAL2
48 XTAL1
47 P0.7, AD7
46 P3.7 / SCL2
45 P0.6, AD6
44 P3.6 / SDA2
43 P0.5, AD5
42 P3.5 / T1
41 P0.4, AD4
AI05791B