m69ar048b STMicroelectronics, m69ar048b Datasheet - Page 22

• Manufacturer Part Number: m69ar048b
• Description: 32 Mbit 2mb X16 1.8v Asynchronous Psram
• Manufacturer: STMicroelectronics

M69AR048B
Figure 19. Chip Enable Controlled, Read and Write Mode AC Waveforms
Note: Write address is valid from either E1 or W of last falling edge.
Figure 20. Chip Enable, Write Enable, Output Enable Controlled, Read/Write AC Waveforms
Note: G can be Low fixed in write operation under E1 control read-write-read operation.
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DQ0-DQ15
DQ0-DQ15
A0-A20
A0-A20
UB, LB
UB, LB
E1
E1
W
W
G
G
READ DATA
tEHQZ
tEHQX
tEHAX
tEHQZ
tEHQX
tEHAX
READ DATA
OUTPUT
OUTPUT
tGHEL
tEHEL
tEHEL
tGHEL
tAVEL
tAVEL
WRITE ADDRESS
WRITE ADDRESS
tDVWH
tDVEH
tELEH
tWLWH
tELAX
tELAX
tWHAX
WRITE DATA
WRITE DATA
tEHAX
INPUT
INPUT
tEHEL
tEHEL
tWHDZ
tEHDZ
tGLQV
tGLQX
tAVEL
tAVEL
(read)
(read)
tELQV
tELQV
READ ADDRESS
READ ADDRESS
tELQX
tELAX(read)
tELAX(read)
tGHQX
tEHAX(read)
tEHAX(read)
READ DATA
tEHQX
OUTPUT
ai09808
ai09809