UPSD3253B-40 データシートの表示（PDF） - STMicroelectronics

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UPSD3253B-40

Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM

STMicroelectronics 

µPSD325X DEVICES

Port Pin

PB0

PB1

PB2

PB3

PB4

PB5

PB6

PB7

PC0

PC1

PC2

PC3

PC4

PC5

PC6

PC7

PD1

Signal

Name

TMS

TCK

VSTBY

TSTAT

TERR

TDI

TDO

Pin No.

80

78

76

74

73

72

67

66

20

16

15

14

9

7

6

5

In/Out

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I

I

I/O

I/O

I/O

I

O

I/O

Basic

General I/O port pin

General I/O port pin

General I/O port pin

General I/O port pin

General I/O port 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

JTAG pin

JTAG pin

General I/O port pin

CLKIN

3

I/O General I/O port pin

PD2

Vcc

Vcc

GND

GND

GND

NC

NC

NC

CSI

1

I/O General I/O port pin

12

50

13

29

69

11

17

71

Function

Alternate

1. PLD Macro-cell outputs

2. PLD inputs

3. Latched Address Out (A0-A7)

1. PLD Macro-cell outputs

2. PLD inputs

3. SRAM stand by voltage input

(VSTBY)

4. SRAM battery-on indicator

(PC4)

5. JTAG pins are dedicated pins

1. PLD I/O

2. Clock input to PLD and APD

1. PLD I/O

2. Chip select to PSD Module

52 PIN PACKAGE I/O PORT

The 52-pin package members of the µPSD325X

devices have the same port pins as those of the

80-pin package except:

s Port 0 (P0.0-P0.7, external address/data bus

AD0-AD7)

s Port 2 (P2.0-P2.3, external address bus A8-

A11)

s Port A (PA0-PA7)

s Port D (PD2)

s Bus control signal (RD,WR,PSEN,ALE)

Pin 5 requires a pull-up resistor (2kΩ for 3V de-

vices, 7.5kΩ for 5V devices) for all devices, with

or without USB function.

16/176

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