89C4051 데이터 시트보기 (PDF) - Atmel Corporation

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89C4051

8-bit Microcontroller with 4K Bytes Flash

Atmel Corporation 

14. Flash Programming and Verification Characteristics

TA = 20°C to 30°C, VCC = 5.0 ± 10%

Symbol

Parameter

Min

VPP

IPP

tDVGL

tGHDX

tEHSH

tSHGL

tGHSL

tGLGH

tELQV

tEHQZ

tGHBL

tWC

tBHIH

tIHIL

Note:

Programming Enable Voltage

Programming Enable Current

Data Setup to PROG Low

Data Hold after PROG

P3.4 (ENABLE) High to VPP

VPP Setup to PROG Low

VPP Hold after PROG

PROG Width

ENABLE Low to Data Valid

Data Float after ENABLE

PROG High to BUSY Low

Byte Write Cycle Time

RDY/BSY\ to Increment Clock Delay

Increment Clock High

1. Only used in 12-volt programming mode.

11.5

1.0

1.0

1.0

10

10

1

0

1.0

200

15. Flash Programming and Verification Waveforms

AT89C4051

Max

Units

12.5

V

250

µA

µs

µs

µs

µs

µs

110

µs

1.0

µs

1.0

µs

50

ns

2.0

ms

µs

ns

11

1001E–MICRO–6/05

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