PSD4235G2-90U STMicroelectronics, PSD4235G2-90U Datasheet - Page 122

• 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

DC and AC parameters
Table 71.
1. Reset (RESET) does not reset Flash memory Program or Erase cycles.
2. Warm reset aborts Flash memory Program or Erase cycles, and puts the device in READ mode.
Table 72.
1. t
Figure 48. ISC timing
122/129
t
t
t
t
Symbol
NLNH–A
OPR
LVDV
CLWH
Symbol
CLCL
is the period of CLKIN (PD1).
ALE Access time from Power-down
Maximum Delay from
APD Enable to Internal PDN Valid
Signal
TCK
TDI/TMS
ISC OUTPUTS/TDO
ISC OUTPUTS/TDO
Reset (RESET) timing
Power-down timing
Warm Reset
RESET high to Operational Device
Parameter
(2)
Parameter
t
ISCCH
t
ISCCL
t
Using CLKIN
ISCPSU
Conditions
(PD1)
Conditions
t
ISCPH
Min
-70
t
t
t
ISCPCO
ISCPZV
ISCPVZ
Max
Min
15 * t
80
25
CLCL
Min
(1)
AI02865
-90
Max
120
Max
PSD4235G2
90
Unit
Unit
μs
ns
ns
µs