PSD4235G2-90U STMicroelectronics, PSD4235G2-90U Datasheet - Page 100

• Manufacturer Part Number: PSD4235G2-90U
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD4235G2-90U

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 4M (512K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1968

Power-on Reset, Warm Reset and Power-down
Table 51.
1. The SR_code and Peripheral Mode bits in the VM register are always cleared to ’0’ on Power-On Reset or Warm Reset.
Figure 33. Reset (RESET) timing
100/129
Macrocells Flip-flop status
VM register
All other registers
Port configuration
V
RESET
CC
(1)
Status During Power-On Reset, Warm Reset and Power-down mode (continued)
Power-On Reset
V
t NLNH-PO
CC
(min)
Cleared to ’0’
Cleared to ’0’ by internal
Power-On Reset
Initialized, based on the
selection in PSDsoft
Express
Configuration menu
Power-On Reset
t OPR
Depends on .re and .pr
equations
Initialized, based on the
selection in PSDsoft
Express
Configuration menu
Cleared to ’0’
Warm Reset
Warm Reset
t NLNH-A
t NLNH
Depends on .re and .pr
equations
Unchanged
Unchanged
Power-down mode
t OPR
PSD4235G2
AI02866b