UPD30121 datasheet(63/76 Pages) NEC

63 / 76 page

Data Sheet U14691EJ1V0DS00

µµµµPD30121

(17) Bus hold parameter (2/2)

(a) Bus hold in Fullspeed/Standby mode

tFHP

HLDRQ#

(input)

HLDACK#

(output)

Note 1

Note 2

BUSCLK

(output)

tFOFF

tFON

Notes 1. UUCAS#/MRAS3#, ULCAS#/MRAS2#, MRAS (0:1)#, UCAS#, LCAS# pins

2. SHB#, IOR#, IOW#, MEMR#, MEMW#, RD#, WR#, ADD (0:24), ADD25/SCLK, and DATA (0:15)

pins, and DATA (16:31)/GPIO (16:31) pin in 32-bit mode

Remark The broken lines indicate high impedance.

(b) Bus hold in Suspend mode

tSHP

HLDRQ#

(input)

HLDACK#

(output)

Note 1

Note 3

BUSCLK

(output)

tRPS

tSON

tCSR

tRPS

tSOFF

Note 2

Notes 1. In 32-bit mode: MRAS (0:1)# pins

In 16-bit mode: UUCAS#/MRAS3#, ULCAS#/MRAS2#, MRAS (0:1)# pins

2. In 32-bit mode: UUCAS#/MRAS3#, ULCAS#/MRAS2#, UCAS#, LCAS# pins

In 16-bit mode: UCAS#, LCAS# pins

3. SHB#, IOR#, IOW#, MEMR#, MEMW#, RD#, WR#, ADD (0:24), ADD25/SCLK, and DATA (0:15)

pins, and DATA (16:31)/GPIO (16:31) pins in 32-bit mode

Remark The broken lines indicate high impedance.

UPD30121 Datasheet(PDF) 63 Page - NEC

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