AT80F52-20PI 查看數據表（PDF） - Atmel Corporation

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AT80F52-20PI

8-Bit Microcontroller with 8K Bytes QuickFlash™ Memory

Atmel Corporation 

AT80F52

Figure 9. Verifying the QuickFlash Memory

AT80F52

ADDR. A0 - A7 P1

VCC

OOOOH/1FFFH

P2.0 - P2.4 P0

A8 - A12

P2.6

SEE QUICK FLASH

VERIFICATION

MODES TABLE

P2.7

ALE

P3.6

P3.7

XTAL 2

EA

+5V

PGM DATA

(USE 10K

PULLUPS)

VIH

3-20 MHz

XTAL1

RST

VIH

GND

PSEN

QuickFlash Verification Characteristics

TA = 0°C to 70°C, VCC = 5.0 ± 10%

Symbol

Parameter

Min

1/tCLCL

Oscillator Frequency

3

tAVQV

Address to Data Valid

tELQV

ENABLE Low to Data Valid

tEHQZ

Data Float After ENABLE

0

QuickFlash Verification Waveforms

P1.0 - P1.7

P2.0 - P2.4

PORT 0

VERIFICATION

ADDRESS

tAVQV

DATA OUT

ALE

LOGIC 1

LOGIC 0

Max

20

48tCLCL

48tCLCL

48tCLCL

EA

P2.7

(ENABLE)

tELQV

LOGIC 1

LOGIC 0

tEHQZ

Units

MHz

3-27

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