HM514100D Series
Refresh Cycle
Parameter
CAS setup time (CBR refresh cycle)
CAS hold time (CBR refresh cycle)
RAS precharge to CAS hold time
CAS precharge time in normal mode
HM514100D
-6
-7
Symbol Min Max Min Max
t CSR
10 —
10 —
t CHR
10 —
10 —
t RPC
10 —
10 —
t CPN
10 —
10 —
-8
Min Max
10 —
10 —
10 —
10 —
Unit Notes
ns
ns
ns
ns
Fast Page Mode Cycle
HM514100D
-6
-7
-8
Parameter
Symbol Min Max Min Max Min Max Unit Notes
Fast page mode cycle time
t PC
Fast page mode CAS precharge time tCP
Fast page mode RAS pulse width
t RASC
Access time from CAS precharge
t ACP
RAS hold time from CAS precharge tRHCP
40 —
45 —
50 —
ns
10 —
10 —
10 —
ns
— 100000 — 100000 — 100000 ns 13
— 35
— 40
— 45
ns 3, 14, 16
35 —
40 —
45 —
ns
Fast Page Mode Read-Modify-Write Cycle
Parameter
Fast page mode read-modify-write
cycle time
CAS precharge to WE delay time
HM514100D
-6
-7
Symbol Min Max Min Max
t PCM
60 —
70 —
-8
Min Max
75 —
Unit Notes
ns
t CPW
35 —
40 —
45 —
ns 10
Test Mode Cycle
Parameter
Test mode WE setup time
Test mode WE hold time
HM514100D
-6
-7
Symbol Min Max Min Max
t WS
0—
0—
t WH
10 —
10 —
-8
Min Max
0—
10 —
Unit Notes
ns
ns
9