HM62256A View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HM62256A

32,768-word ×8-bit High Speed CMOS Static RAM

Hitachi -> Renesas Electronics 

HM62256A Series

HM62256A Series

AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, unless otherwise noted.)

Test Conditions

• Input pulse levels: 0.8 V to 2.4 V

• Input and output timing refernce levels: 1.5 V

• Input rise and fall times: 5 ns

• Output load: 1 TTL Gate + CL (100 pF)

(Including scope & jig)

Read Cycle

HM62256A-8 HM62256A-10 HM62256A-12 HM62256A-15

—————– —————– —————– —————–

Parameter

Symbol Min Max Min Max Min Max Min Max Unit Note

———————————————————————————————————————————————–

Read cycle time

tRC

85 — 100 — 120 — 150 — ns

———————————————————————————————————————————————–

Address access time tAA

— 85 — 100 — 120 — 150 ns

———————————————————————————————————————————————–

Chip select

access time

tACS

— 85 — 100 — 120 — 150 ns

———————————————————————————————————————————————–

Output enable to

output valid

tOE

— 45 — 50 — 60 — 70 ns

———————————————————————————————————————————————–

Chip selection to

output in low-Z

tCLZ

10 — 10 — 10 — 10 — ns 2

———————————————————————————————————————————————–

Output enable to

output in low-Z

tOLZ

5

—5

—5

—5

— ns 2

———————————————————————————————————————————————–

Chip deselection to

tCHZ

0

30 0

35 0

40 0

50 ns

1, 2

output in high-Z

———————————————————————————————————————————————–

Output disable to

output in high-Z

tOHZ

0

30 0

35 0

40 0

50 ns

1, 2

———————————————————————————————————————————————–

Output hold from

address change

tOH

5

— 10 — 10 — 10 —

ns

———————————————————————————————————————————————–

6

Share Link: