UPSD3212C Datasheet, PDF (98/152 Pages) STMicroelectronics – Flash Programmable System Devices with 8032 Microcontroller Core and 16Kbit SRAM

UPSD3212C, UPSD3212CV
Figure 48. PLD Diagram
DATA
BUS
8
PAGE
REGISTER
73
DECODE PLD
4
2
1
1
2
PRIMARY FLASH MEMORY SELECTS
SECONDARY NON-VOLATILE MEMORY SELECTS
SRAM SELECT
CSIOP SELECT
PERIPHERAL SELECTS
16 OUTPUT MACROCELL FEEDBACK
DIRECT MACROCELL ACCESS FROM MCU DATA BUS
CPLD
16 OUTPUT
MACROCELL
MACROCELL
PT
ALLOC.
73
ALLOC.
20 INPUT MACROCELL
(PORT A,B,C)
DIRECT MACROCELL INPUT TO MCU DATA BUS
20
INPUT MACROCELL & INPUT PORTS
TO
MCELLAB
PORT A OR
B1
8
MCELLBC
TO PORT B OR C ₈
2
EXTERNAL CHIP SELECTS
TO PORT D
2
PORT D INPUTS
AI07435
Note: 1. Ports A is not available in the 52-pin package
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