Rainbow-electronics AT89LS51 Manual de usuario descargar pdf (Pagina 16)

AT89LS51

3053A–8051–05/02

Figure 6. Flash Programming and Verification Waveforms – Parallel Mode

Flash Programming and Verification Characteristics (Parallel Mode)

= 20°C to 30°C, V

= 4.5 to 5.5V

Symbol Parameter Min Max Units

Programming Supply Voltage 11.5 12.5 V

Programming Supply Current 10 mA

Supply Current 30 mA

1/t

CLCL

Oscillator Frequency 3 16 MHz

AVGL

Address Setup to PROG Low 48t

CLCL

GHAX

Address Hold After PROG 48t

CLCL

DVGL

Data Setup to PROG Low 48t

CLCL

GHDX

Data Hold After PROG 48t

CLCL

EHSH

P2.7 (ENABLE)HightoV

48t

CLCL

SHGL

Setup to PROG Low 10 µs

GHSL

Hold After PROG 10 µs

GLGH

PROG Width 0.2 1 µs

AVQ V

Address to Data Valid 48t

CLCL

ELQV

ENABLE Low to Data Valid 48t

CLCL

EHQZ

Data Float After ENABLE 048t

CLCL

GHBL

PROG High to BUSY Low 1.0 µs

Byte Write Cycle Time 50 µs

GLGH

GHSL

AVGL

SHGL

DVGL

GHAX

AVQV

GHDX

EHSH

ELQV

BUSY

READY

GHBL

EHQZ

P1.0 - P1.7

P2.0 - P2.3

ALE/PROG

PORT 0

LOGIC 1

LOGIC 0

EA/V

P2.7

(ENABLE)

P3.0

(RDY/BSY)

PROGRAMMING

ADDRESS

VERIFICATION

ADDRESS

DATA I N

DATA OUT

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 28 29

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