7540 datasheet(39/366 Pages) RENESAS

tên linh kiện	7540

Giải thích chi tiết về linh kiện	8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 740 SERIES

PDF	366 Pages

Scroll/Zoom	100%

nhà sản xuất	RENESAS [Renesas Technology Corp]

Trang chủ	http://www.renesas.com

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REJ09B0018-0200Z

Rev.2.00

Jun 21, 2004

HARDWARE

7540 Group

FUNCTIONAL DESCRIPTION

Fig. 18 Block diagram of ports (2)

Pull-up control

INT interrupt input

P3 input level

selection bit

(11) Ports P30–P35

Pull-up control

(9) Port P14

Data bus

Serial I/O1 ready output

Serial I/O2 output

Serial I/O2 input

SDATA2 pin selection bit

Port latch

Direction

SDATA2 output in operation signal

CNTR0 interrupt input

Pulse output mode

Timer output

P10, P12, P13

input level

selection bit

Serial I/O mode selection bit

Serial I/O1 enable bit

SRDY1 output enable bit

P10, P12, P13, P36, and P37 input level are switched to the CMOS/TTL level by the port P1P3 control register.

Data bus

Port

latch

Direction

Data bus

Port

latch

Direction

Data bus

Port latch

Direction

A/D converter input

Analog input pin

selection bit

(12) Ports P36, P37

Data bus

Port

latch

Direction

(10) Ports P20–P27

(8) Port P13

When the TTL level is selected, there is no hysteresis characteristics.

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