UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 13

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

Table 1. uPSD325X Devices Product Matrix
Figure 3. TQFP52 Connections
Note: 1. Pull-up resistor required on pin 5 (2k
BV-24
BV-24
uPSD
uPSD
uPSD
uPSD
3254
3254
3253
3253
A-40
B-40
Part
No.
2. Pin 7 is Not Connected (NC) for device with no USB function.
Flash
Main
(bit)
2M
2M
1M
1M
Flash
256K
256K
256K
256K
Sec.
(bit)
USB+
USB–
GND
V CC
PD1
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
1
2
3
4
5
6
7
8
9
10
11
12
13
SRAM
256K
256K
256K
256K
(1)
(2)
(bit)
Macro
-Cells
16
16
16
16
for 3V devices, 7.5k
37 or
Pins
I/O
46
46
37
37
UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
PWM
Ch.
5
5
5
5
Timer
/ Ctr
3
3
3
3
for 5V devices) for all 52-pin devices, with or without USB function.
UART
Ch.
2
2
2
2
I
2
1
1
1
1
C
ADC
Ch.
4
4
4
4
DDC
yes
yes
yes
yes
39 P1.5 / ADC1
38 P1.4 / ADC0
37 P1.3 / TXD1
36 P1.2 / RXD1
35 P1.1 / T2X
34 P1.0 / T2
33 V CC
32 XTAL2
31 XTAL1
30 P3.7 / SCL2
29 P3.6 / SDA2
28 P3.5 / T1
27 P3.4 / T0
USB V
AI05790C
yes
5V
3V
5V
3V
CC
MHz Pins
40
24
40
24
13/175
52 or
80
80
52
52