UPD46128512F9-CR2 datasheet(10/82 Pages) NEC

Part #	UPD46128512F9-CR2

Description	128M-BIT CMOS MOBILE SPECIFIED RAM 8M-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION

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Manufacturer	NEC [NEC]

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Preliminary Data Sheet M17507EJ2V0DS

10

μ PD46128512-X

Initialization Timing 2

(1) Following power application, make CE2 and /CE1 HIGH for the period of tMHCL.

Normal operation is possible after the completion of initialization.

Figure 1-2. Initialization Timing Chart 2

tMHCL

/CE1 (Input)

CE2 (Input)

Intialization

Nomal Operation

VCC, VCCQ

VCC (MIN.), VCCQ (MIN.)

Cautions 1. tMHCL is specified from when the power supply voltage reaches the prescribed minimum value

(VCC (MIN.), VCCQ (MIN.)).

2. If the period from power supplying to value VCC (MIN.), VCCQ (MIN.) is beyond 10 ms or power

supply is not stable rise, should be used Initialization Timing Chart 1.

Initialization Timing 2

Parameter

Symbol

MIN.

MAX.

Unit

Following power application /CE1, CE2 HIGH hold to /CE1 LOW

tMHCL

300

μs

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