UPD1724X View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD1724X

4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS

NEC => Renesas Technology 

µPD17240, 17241, 17242, 17243, 17244, 17245, 17246

DIFFERENCES BETWEEN µPD17246 SUBSERIES, µPD17236 SUBSERIES, AND µPD17255

SUBSERIES (1/2)

ROM

Item

RAM

Ports

Reset

• Reset by watchdog

timer

• Reset by stack pointer

• Low-voltage detector

(mask option)

Capacitor for oscillation

Vector address

RAM retention flag

µPD17246 Subseries

µPD17236 Subseries

µPD17225 Subseries

µPD17240: 2,048 × 16 bits

µPD17241: 4,096 × 16 bits

µPD17242: 6,144 × 16 bits

µPD17243: 8,192 × 16 bits

µPD17244: 10,240 × 16 bits

µPD17245: 12,288 × 16 bits

µPD17246: 16,384 × 16 bits

µPD17230: 2,048 × 16 bits

µPD17231: 4,096 × 16 bits

µPD17232: 6,144 × 16 bits

µPD17233: 8,192 × 16 bits

µPD17234: 10,240 × 16 bits

µPD17235: 12,288 × 16 bits

µPD17236: 16,384 × 16 bits

µPD17225: 2,048 × 16 bits

µPD17226: 4,096 × 16 bits

µPD17227: 6,144 × 16 bits

µPD17228: 8,192 × 16 bits

447 × 4 bits

223 × 4 bits

111 × 4 bits

(µPD17225, 17226)

223 × 4 bits

(µPD17227, 17228)

P0B0 to P0B3: I/O (bit I/O)

P0C0 to P0C3: I/O (group I/O)

P0D0 to P0D3: I/O (group I/O)

P1A0 to P1A2: I/O (bit I/O)

P1B0: I/O, functions

alternately as INT pin

P0B0 to P0B3: I/O (bit I/O)

P0C0 to P0C3: I/O (group I/O)

P0D0 to P0D3: I/O (group I/O)

P1A0: Input or output

selectable by mask

option

P0B0 to P0B3: Input

P0C0 to P0C3: Output

P0D0 to P0D3: Output

The RESET pin is internally pulled down by the occurrence of

the internal reset signals on the left, causing a reset (usually,

the RESET pin is pulled up).

A low level is output from the

WDOUT pin by the

occurrence of the internal

reset signals on the left, and

a reset takes place if the

WDOUT pin is externally

connected to the RESET pin.

Selected by mask option

(15 pF)

Not provided

Basic interval timer: 0002H

Rising and falling

edges of INT pin: 0003H

8-bit timer:

0004H

Basic interval timer:

0001H

Rising and falling edges of INT pin: 0002H

8-bit timer:

0003H

Provided

Not provided

Data Sheet U15002EJ1V0DS

3

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