M48Z128 datasheet(6/17 Pages) STMICROELECTRONICS

Part #	M48Z128

Description	1 Mbit 128Kb x8 ZEROPOWER SRAM

PDF	17 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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6 / 17 page

M48Z128, M48Z128Y

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Table 8. Power Down/Up AC Characteristics

(TA = 0 to 70 °C)

Note: 1. VPFD (max) to VPFD (min) fall time of less than tF may result in deselection/write protection not occurring until 200µs after VCC pass-

es VPFD (min).

2. VPFD (min) to VSO fall time of less than tFB may cause corruption of RAM data.

Symbol

Parameter

Min

Max

Unit

(1)

VPFD (max) to VPFD (min) VCC Fall Time

300

µs

tFB

(2)

VPFD (min) to VSO VCC Fall Time

µs

tWP

Write Protect Time from VCC =VPFD

150

µs

VSO to VPFD (max) VCC Rise Time

µs

tER

E Recovery Time

120

Figure 6. Power Down/Up Mode AC Waveforms

AI01031

VCC

(PER CONTROL INPUT)

OUTPUTS

DON’T CARE

HIGH-Z

tFB

tWP

tDR

VALID

(PER CONTROL INPUT)

RECOGNIZED

VPFD (max)

VPFD (min)

VSO

tER

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