UPD78044F datasheet(46/66 Pages) NEC

46 / 66 page

µPD78F0034A, 78F0034AY

Data Sheet U14040EJ4V0DS

Flash Memory Programming Characteristics (VDD = 2.7 to 5.5 V, VSS = 0 V, VPP = 9.7 to 10.3 V)

(1) Basic characteristics

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Operating frequency

4.0

≤ VDD ≤ 5.5 V

1.0

8.38

MHz

2.7

≤ VDD < 4.0 V

1.0

5.0

MHz

Supply voltage

VDD

Operation voltage when writing

2.7

5.5

VPPL

Upon VPP low-level detection

0.2VDD

VPP

Upon VPP high-level detection

0.8VDD

VDD

1.2VDD

VPPH

Upon VPP high-voltage detection

9.7Note 1 10.0Note 1 10.3Note 1

VDD supply current

IDD

VPP supply current

IPP

VPP =10.0 V

100

Write time (per byte)

TWRT

500

µs

Number of rewrites

CWRT

20Note 2

Times

Erase time

TERASE

120

Programming temperature

TPRG

+10

+40

°C

Notes 1. For the product grades “K, E, and P”, 10.2 V (MIN.), 10.3 V (TYP.), and 10.4 V (MAX.), are applied.

2. For the product specification “K and E”, the number is 1 (MAX.).

(2) Serial write operation characteristics

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

VPP set time

tPSRON

VPP high voltage

1.0

µs

Set time from VDD

↑ to VPP↑

tDRPSR

VPP high voltage

1.0

µs

Set time from VPP

↑ to RESET↑

tPSRRF

VPP high voltage

1.0

µs

VPP count start time from RESET

↑

tRFCF

1.0

µs

Count execution time

tCOUNT

2.0

VPP counter high-level width

tCH

8.0

µs

VPP counter low-level width

tCL

8.0

µs

VPP counter noise elimination width

tNFW

Flash Memory Write Mode Set Timing

VDD

0 V

VDD

RESET (input)

0 V

VPPH

VPPL

VPP

tRFCF

tPSRON tPSRRF

tDRPSR

tCH

tCL

tCOUNT

UPD78044F Datasheet(PDF) 46 Page - NEC

UPD78044F Datasheet(HTML) 46 Page - NEC

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