hm5216805 Renesas Electronics Corporation., hm5216805 Datasheet - Page 55

• Manufacturer Part Number: hm5216805
• Description: 16 M Lvttl Interface Sdram 100 Mhz/83 Mhz 1-mword 8-bit 2-bank/2-mword 4-bit 2-bank - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

Clock Suspend Mode
A11(BS)
DQMU
/DQML
A11(BS)
Address
Address
DQMU
/DQML
I/O
(output)
I/O
(output)
(input)
(input)
I/O
I/O
CKE
CKE
CLK
RAS
CAS
RAS
CAS
CS
WE
CS
WE
Bank0
Active
Bank0
Active
R:a
R:a
0
Active clock
suspend start
Active clock
suspend start
1
2
3
Active clock
supend end
Active clock
suspend end
4
t
CESP
5
Bank0
Write
C:a
Bank0
Read
C:a R:b
a
6
Bank1
Active
a+1 a+2
7
Bank1
Active
a
R:b
t
Write suspend
CEH
8
start
a+1 a+2
Read suspend
9
High-Z
HM5216805 Series, HM5216405 Series
start
10
Write suspend
11
High-Z
Read suspend
t
CES
a+3
end
12
Bank1
Write
end
C:b
b
13
Bank1
Read
a+3
Bank0
Precharge
b+1 b+2 b+3
C:b
14
Bank0
Precharge
15
b
16
b+1 b+2
17
Earliest Bank1
Precharge
Earliest Bank1
Precharge
18
b+3
19
20
Read cycle
RAS-CAS delay=2
CAS latency=2
Burst length=4
Write cycle
RAS-CAS delay=2
CAS latency=2
Burst length=4
= V
= V
IH
IH
or V
or V
IL
IL
55