UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 12

• Manufacturer Part Number: UPSD3234AV-24U1T
• Description: Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
• Manufacturer: STMicroelectronics

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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
52-PIN PACKAGE I/O PORT
The 52-pin package members of the uPSD323X
Devices have the same port pins as those of the
80-pin package except:
12/170
Port Pin
GND
GND
GND
PC2
PC3
PC4
PC7
PD1
PD2
Vcc
Vcc
NC
NC
NC
Port 0 (P0.0-P0.7, external address/data bus
AD0-AD7)
Port 2 (P2.0-P2.3, external address bus A8-
A11)
JTAG TMS
JTAG TCK
JTAG TDO
JTAG TDI
TERR_
Signal
TSTAT
CLKIN
Name
V
USB+
STBY
Pin No.
20
16
15
14
12
50
13
29
69
10
11
17
71
9
7
6
5
3
1
In/Out
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
I
JTAG pin
JTAG pin
General I/O port pin
General I/O port pin
General I/O port pin
JTAG pin
JTAG pin
General I/O port pin
General I/O port pin
General I/O port pin
Basic
Port A (PA0-PA7)
Port D (PD2)
Bus control signal (RD,WR,PSEN,ALE)
Pin 5 requires a pull-up resistor (2k
devices, 7.5k for 5V devices) for all devices,
with or without USB function.
Function
1.
2.
3.
4.
5.
1.
2.
1.
2.
PLD Macro-cell outputs
PLD inputs
SRAM stand by voltage in-
put (V
SRAM battery-on indicator
(PC4)
JTAG pins are dedicated
pins
PLD I/O
Clock input to PLD and APD
PLD I/O
Chip select to PSD Module
STBY
Alternate
)
for 3V