9

Data Sheet M14522EJ3V0DS

µPD4482162, 4482182, 4482322, 4482362

Asynchronous Truth Table

Operation

/G

I/O

Read Cycle

L

Dout

Read Cycle

H

High-Z

Write Cycle

×

High-Z, Din

Deselected

×

High-Z

Remark

× : don’t care

Synchronous Truth Table

Operation

/CE

CE2

/CE2

/AP

/AC

/ADV

/WRITE

CLK

Address

Deselected

Note

H

×××

L

××

L

→ H

None

Deselected

Note

LL

×

L

××

×

L

→ H

None

Deselected

Note

L

×

HL

××

×

L

→ H

None

Deselected

Note

LL

×

HL

××

L

→ H

None

Deselected

Note

L

×

HH

L

××

L

→ H

None

Read Cycle / Begin Burst

L

H

L

L

××

×

L

→ H

External

Read Cycle / Begin Burst

L

H

L

H

L

×

HL

→ H

External

Read Cycle / Continue Burst

×××

HH

L

H

L

→ HNext

Read Cycle / Continue Burst

H

×××

HL

H

L

→ HNext

Read Cycle / Suspend Burst

×××

HH

H

H

L

→ H

Current

Read Cycle / Suspend Burst

H

×××

HH

H

L

→ H

Current

Write Cycle / Begin Burst

L

H

L

H

L

×

LL

→ H

External

Write Cycle / Continue Burst

×××

HH

L

L

L

→ HNext

Write Cycle / Continue Burst

H

×××

HL

L

L

→ HNext

Write Cycle / Suspend Burst

×××

HH

H

L

L

→ H

Current

Write Cycle / Suspend Burst

H

×××

HH

L

L

→ H

Current

Note Deselect status is held until new “Begin Burst” entry.

Remarks 1.

× : don’t care

2. /WRITE = L means any one or more byte write enables (/BW1, /BW2, /BW3 or /BW4) and /BWE are

LOW or /GW is LOW.

/WRITE = H means the following two cases.

(1) /BWE and /GW are HIGH.

(2) /BW1, /BW2 and /GW are HIGH, and /BWE is LOW. [

µPD4482162, µPD4482182]

/BW1 to /BW4 and /GW are HIGH, and /BWE is LOW. [

µPD4482322, µPD4482362]