PSD835G2-90U STMicroelectronics, PSD835G2-90U Datasheet - Page 109

• Manufacturer Part Number: PSD835G2-90U
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD835G2-90U

• 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: 497-2015

PSD835G2
Table 41.
1. Any input used to select an internal PSD function.
2. RD timing has the same timing as DS signal.
3. RD and PSEN have the same timing.
4. RD timing has the same timing as DS and PSEN signals.
5. In multiplexed mode, latched addresses generated from ADIO delay to address output on any port.
Figure 44. WRITE timing
t
t
t
THEH
ELTL
AVPV
Symbol
NON-MULTIPLEXED
NON-MULTIPLEXED
MULTIPLEXED
R/W setup time to Enable
R/W hold time after Enable
Address input valid to address output
delay
ADDRESS
READ timing (continued)
ALE / AS
DATA
BUS
BUS
BUS
R / W
A /D
(DS)
CSI
WR
E
Parameter
t AVLX
t AVPV
ADDRESS
VALID
t SLWL
t AVWL
t LVLX
ADDRESS
t LXAX
VALID
ADDRESS OUT
Conditions
(5)
t THEH
t WLWH
Min
t EHEL
6
0
-70
t WLMV
Max
20
t DVWH
VALID
VALID
DATA
DATA
t WHPV
Min
10
0
DC and AC parameters
-90
Max
t WHAX
25
t WHDX
t ELTL
MCU I/O OUT
STANDARD
Turbo
Off
AI02896
109/120
Unit
ns
ns
ns