UPSD3254 STMICROELECTRONICS [STMicroelectronics], UPSD3254 Datasheet - Page 140

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

UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
Table 104. Status During Power-on RESET, Warm RESET and Power-down Mode
Note: 1. The SR_cod and PeriphMode Bits in the VM Register are always cleared to '0' on Power-on RESET or Warm RESET.
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MCU I/O
PLD Output
Address Out
Peripheral I/O
PMMR0 and PMMR2
Macrocells flip-flop status
VM Register
All other registers
Port Configuration
Register
(1)
Input mode
Valid after internal PSD
configuration bits are
loaded
Tri-stated
Tri-stated
Cleared to '0'
Cleared to '0' by internal
Power-on RESET
Initialized, based on the
selection in PSDsoft
Configuration menu
Cleared to '0'
Power-On RESET
Power-On RESET
Input mode
Valid
Tri-stated
Tri-stated
Unchanged
Depends on .re and .pr
equations
Initialized, based on the
selection in PSDsoft
Configuration menu
Cleared to '0'
Warm RESET
Warm RESET
Unchanged
Depends on inputs to PLD
(addresses are blocked in
PD Mode)
Not defined
Tri-stated
Unchanged
Depends on .re and .pr
equations
Unchanged
Unchanged
Power-down Mode
Power-down Mode