PSD4235G2-90UI STMicroelectronics, PSD4235G2-90UI Datasheet - Page 121

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

Specifications of PSD4235G2-90UI

• 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: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1969

PSD4235G2
Table 69.
1. Any input used to select Port F Data Peripheral mode.
2. RD has the same timing as DS, LDS, UDS, and PSEN (in 8031 combined mode).
3. Data is already stable on Port F.
4. RD has the same timing as DS, LDS, UDS, and PSEN (in 8031 combined mode).
Table 70.
1. WR has the same timing as the E, LDS, UDS, WRL, and WRH signals.
2. Data stable on ADIO pins to data on Port F.
Figure 47. Reset (RESET) timing
Table 71.
t
t
t
t
t
t
t
t
t
t
t
t
AVQV–PF
SLQV–PF
RLQV–PF
DVQV–PF
QXRH–PF
RLRH–PF
RHQZ–PF
WLQV–PF
DVQV–PF
WHQZ–PF
NLNH
NLNH–PO
Symbol
Symbol
Symbol
V
RESET
CC
Port F Peripheral Data Mode Read timing
Port F Peripheral Data Mode Write timing
Reset (RESET) timing
RESET Active low time
Power-on Reset Active low time
Address Valid to Data Valid
CSI Valid to Data Valid
RD to Data Valid
RD to Data Valid 8031 Mode
Data In to Data Out Valid
RD Data Hold time
RD Pulse Width
RD to Data high-Z
WR to Data Propagation Delay
Data to Port F Data Propagation Delay
WR Invalid to Port F Tri-state
Power-On Reset
Parameter
V
t NLNH-PO
CC
(min)
Parameter
Parameter
(1)
t OPR
Conditions
(2)(3)
(1)
(4)
Conditions
Conditions
(1)
(2)
(1)
Min
27
0
-70
Max
30
25
21
31
22
23
Min
Warm Reset
-70
t NLNH-A
Min
150
t NLNH
1
Min
Max
32
0
25
22
20
DC and AC parameters
-90
Max
Min
35
35
32
38
30
25
Max
-90
t OPR
Turbo
+ 12
+ 12
Max
Off
35
30
25
AI02866b
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Unit
Unit
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns