8242 데이터 시트보기 (PDF) - Intel

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8242

UNIVERSAL PERIPHERAL INTERFACE 8-BIT SLAVE MICROCONTROLLER

Intel 

WAVEFORMS (Continued)

COMBINATION PROGRAM VERIFY MODE

UPI-41AH 42AH

210393 – 23

NOTES

1 A0 must be held low (0V) during program verify modes

2 For VIH VIH1 VIL VIL1 VDDH and VDDL please consult the D C Characteristics Table

3 When programming the 8741AH 8742AH a 0 1 mF capacitor is required across VDD and ground to suppress spurious

voltage transients which can damage the device

VERIFY MODE

NOTES

1 PROG must float if EA is low

2 PROG must float or e 5V when EA is high

3 P10 – P17 e 5V or must float

4 P24 – P27 e 5V or must float

5 A0 must be held low during programming verify modes

210393 – 29

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