PSD835G2-90U STMicroelectronics, PSD835G2-90U Datasheet - Page 108

• 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

DC and AC parameters
Figure 43. READ timing
1. t
Table 41.
108/120
t
t
t
t
t
t
t
t
t
t
LVLX
AVLX
LXAX
AVQV
SLQV
RLQV
RHQX
RLRH
RHQZ
EHEL
Symbol
AVLX
NON-MULTIPLEXED
NON-MULTIPLEXED
and t
MULTIPLEXED
ALE or AS pulse width
Address setup time
Address hold time
Address valid to data valid
CS valid to data valid
RD to data valid 8-bit bus
RD or PSEN to data valid
8-bit bus, 8031, 80251
RD data hold time
RD pulse width
RD to data high-Z
E pulse width
LXAX
(PSEN, DS)
READ timing
ADDRESS
ALE /AS
DATA
are not required for 80C51XA in Burst mode.
BUS
BUS
BUS
A /D
R / W
CSI
RD
E
Parameter
t AVPV
t LVLX
t AVLX
ADDRESS
VALID
t LXAX
ADDRESS OUT
1
t SLQV
Conditions
t AVQV
t THEH
(1)
(1)
(1)
(2)
(3)
(4)
(4)
(4)
ADDRESS
VALID
t RLQV
t RLRH
t EHEL
Min
15
27
27
4
7
0
-70
Max
70
75
24
31
20
VALID
VALID
DATA
DATA
t RHQX
t ELTL
Min
20
32
32
6
8
0
-90
tRHQZ
Max
100
90
32
38
25
Turbo
+ 12
Off
AI02895
PSD835G2
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns