M48Z58-70MH1 查看數據表（PDF） - STMicroelectronics

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M48Z58-70MH1

64 Kbit (8Kb x 8) ZEROPOWER® SRAM

STMicroelectronics 

M48Z58, M48Z58Y

Table 8. Power Down/Up Mode AC Characteristics

(TA = 0 to 70°C or –40 to 85°C)

Symbol

Parameter

Min

Max

Unit

tPD

tF (1)

tFB (2)

E or W at VIH before Power Down

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

VPFD (min) to VSS VCC Fall Time

0

µs

300

µs

10

µs

tR

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

10

µs

tRB

VSS to VPFD (min) VCC Rise Time

1

µs

tREC (3)

VPFD (max) to Inputs Recognized

40

200

ms

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

VCC passes VPFD (min).

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

3. tREC (min) = 20ms for industrial temperature grade 6 device.

Figure 5. Power Down/Up Mode AC Waveforms

VCC

VPFD (max)

VPFD (min)

VSO

tF

tFB

tPD

INPUTS

RECOGNIZED

OUTPUTS

VALID

(PER CONTROL INPUT)

tRB

tDR

DON'T CARE

HIGH-Z

tR

tREC

RECOGNIZED

VALID

(PER CONTROL INPUT)

AI01168C

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