UPD17708 datasheet(231/356 Pages) NEC

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UPD17708 데이터시트(PDF) 231 Page - NEC

부품명	UPD17708

상세설명	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM

PDF	356 Pages

Scroll/Zoom	100%

제조업체	NEC [NEC]

홈페이지	http://www.nec.com/

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231 / 356 page

231

µPD17704, 17705, 17707, 17708, 17709

This is because, even if only the SBACK flag is set, the SIO0NWT flag is also set because it is in the register

at the same address. If the wait status is set at this time, the wait status is released and one pulse of the shift

clock is output.

Figure 16-11. Acknowledge Output and Input Operations

Data input

Data

Hi-Z (D1)

Hi-Z (D0)

SBACK output

Hi-Z

Shift clock

Acknowledge output

At this time, wait status must

be released at the same time.

Data output

Data

D1 output

D0 output

ACK at reception

side

Shift clock

Acknowledge input

(a) During reception

(b) During transmission

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