UPD17072 datasheet(58/226 Pages) NEC

Part #	UPD17072

Description	4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM

Download	226 Pages

Scroll/Zoom	100%

Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

Logo

58 / 226 page

µPD17072,17073

58

10.2 General-Purpose I/O Ports (P0B, P0C, P0D)

10.2.1 Configuration of I/O ports

The configurations of the I/O ports are shown below.

P0B (P0B3, P0B2, P0B1, P0B0)

P0C (P0C1, P0C0)

P0D (P0D3, P0D2)

I/O mode selector flag

VDD

RESET

Output

latch

1

0

Write instruction

Read instruction

Port register

(1 bit)

10.2.2 Use of I/O ports

The I/O port is set in the input or output mode by the I/O select registers P0B and P0C of the control register.

P0D, P0C, and P0D are the bit I/O ports. Therefore, these ports can set in input or output mode in 1-bit units.

To set output data or to read input data, data is written to the corresponding port register, or an instruction that

reads the data is executed.

10.2.3 describes the configuration of the I/O select register of each port.

10.2.4 describes how to use an I/O port as an input port.

10.2.5 describes how to use an I/O port as an output port.

Similar Part No. - UPD17072

Manufacturer	Part #	Datasheet	Description
Renesas Technology Corp	PD17P709A	390Kb / 38P	4-BIT SINGLE-CHIP MICROCONTROLLER WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
NEC	UPD17010	1Mb / 424P	4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE DEDICATED TO DIGITAL TUNING SYSTEM
NEC	UPD17005	15Mb / 482P	DIGITAL TUNING SYSTEM HARDWARE BUILT-IN 4-BIT SINGLE-CHIP MICROCONTROLLER
Renesas Technology Corp	PD17012	1Mb / 320P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
NEC	UPD17933	1,022Kb / 252P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
	UPD17016	1Mb / 324P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
	UPD17704	1Mb / 356P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
	UPD17717	1Mb / 408P	4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
	UPD17P709	201Kb / 38P	4-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN HARDWARE DEDICATED TO DIGITAL TUNING SYSTEMS
	UPD17P719	201Kb / 40P	4-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN HARDWARE DEDICATED TO DIGITAL TUNING SYSTEMS