UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 48

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

UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
PORT Type and Description
Figure 17. PORT Type and Description (Part 1)
48/175
WR, RD,ALE,
PSEN
XTAL1,
Symbol
RESET
XTAL2
PORT0
Out
In /
I/O
O
O
I
I
Circuit
NFC
xon
• Schmitt input with internal pull-up
Output only
CMOS compatible interface
NFC : 400ns
On-chip oscillator
On-chip feedback resistor
Stop in the power down mode
External clock input available
CMOS compatible interface
Bidirectional I/O port
Schmitt input
Address Output ( Push-Pull )
CMOS compatible interface
Description
AI06653