UPD17062 datasheet(160/298 Pages) RENESAS

tên linh kiện	UPD17062

Giải thích chi tiết về linh kiện	MOS INTEGRATED CIRCUIT

PDF	298 Pages

Scroll/Zoom	100%

nhà sản xuất	RENESAS [Renesas Technology Corp]

Trang chủ	http://www.renesas.com

Logo

160 / 298 page

158

µPD17062

13.4.3

Halt Release by Key Entry

The HALT 0001B instruction specifies a key entry as a halt release condition.

If this condition is specified, the halt state is released when a high level is applied to one of the P0D0/ADC2

to P0D3/ADC5 pins.

Items (1) to (3) describe cautions to be taken in using a general-purpose output port as a key source signal

and the P0D0/ADC2 to P0D3/ADC5 pins for an A/D converter.

(1) Cautions in using a general-purpose output port as a key source signal

P0D3/ADC5

P0D2/ADC4

P0D1/ADC3

P0D0/ADC2

Latch

Switch A

General-purpose output port

The HALT 0001B instruction must be executed after the general-purpose output port for key source signal

input is raised to a high.

If an alternate switch, like switch A in the above figure, is used, a high level is always applied to the P0D0/

ADC2 pin when the switch is kept closed, and causes the halt state to be released immediately.

Therefore, great care should be taken when an alternate switch is used.

The P0D0/ADC2 to P0D3/ADC5 pins are internally pulled down automatically.

UPD17062 bảng dữ liệu(PDF) 160 Page - Renesas Technology Corp