UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 113

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

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Figure 58. PLD Diagram
Note: 1. Ports A is not available in the 52-pin package
DATA
BUS
73
73
DIRECT MACROCELL INPUT TO MCU DATA BUS
16
20
8
2
OUTPUT MACROCELL FEEDBACK
DECODE PLD
INPUT MACROCELL & INPUT PORTS
REGISTER
PAGE
CPLD
PORT D INPUTS
ALLOC.
uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
PT
8
4
1
1
2
20 INPUT MACROCELL
(PORT A,B,C)
MACROCELL
16 OUTPUT
PRIMARY FLASH MEMORY SELECTS
SECONDARY NON-VOLATILE MEMORY SELECTS
SRAM SELECT
CSIOP SELECT
PERIPHERAL SELECTS
DIRECT MACROCELL ACCESS FROM MCU DATA BUS
MACROCELL
ALLOC.
EXTERNAL CHIP SELECTS
TO PORT A OR B 1
TO PORT B OR C
TO PORT D
MCELLAB
MCELLBC
AI06600
113/170
8
8
2