UPD17P228 Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD17P228

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROLLER

NEC => Renesas Technology 

µPD17P228

1. DIFFERENCES AMONG µPD17225, 17226, 17227, 17228 AND µPD17P228

µPD17P228 is equipped with PROM to which data can be written by the user instead of the internal mask ROM

(program memory) of the µPD17228.

Table 1-1 shows the differences between the µPD17225, 17226, 17227, 17228 and µPD17P228.

The differences among these five models are the program memory and mask option, and their CPU functions and

internal hardware are identical. Therefore, the µPD17P228 can be used to evaluate the program developed for the

µPD17225, 17226, 17227, and 17228 system. Note, however, that some of the electrical specifications such

as supply current and low-voltage detection voltage of the µPD17P228 are different from those of the

µPD17225, 17226, 17227, and 17228.

Table 1-1. Differences among µPD17225, 17226, 17227, 17228 and µPD17P228

Product Name µPD17P228

µPD17225

µPD17226

µPD17227

µPD17228

Item

Program memory

One-time PROM

Mask ROM

16 K bytes

(8192 × 16)

(0000H-1FFFH)

4 K bytes

(2048 × 16)

(0000H-07FFH)

8 K bytes

(4096 × 16)

(0000H-0FFFH)

12 K bytes

(6144 × 16)

(0000H-17FFH)

16 K bytes

(8192 × 16)

(0000H-1FFFH)

Data memory

223 × 4 bits

111 × 4 bits

223 × 4 bits

Pull-up resistor of RESET Pin

Low-voltage detector circuitNote

Provided

Provided

Any (mask option)

Any (mask option)

VPP pin, operation mode select pin

Provided

Not provided

Instruction execution time (tCY)

2 µs

(VDD = 3.0 to 3.6 V)

4 µs

(VDD = 2.2 to 3.6 V)

16 µs

(VDD = 2.2 to 3.6 V)

2 µs (VDD = 2.2 to 3.6 V)

4 µs (VDD = 2.0 to 3.6 V)

Operation when P0C, P0D are standby

Retain output level immediately before standby mode

Supply voltage

VDD = 2.0 to 3.6 V

VDD = 2.0 to 3.6 V

Package

30-pin plastic

SSOP

(7.62 mm (300))

• 28-pin plastic SOP (9.53 mm (375))

• 28-pin plastic SDIP (10.16 mm (400))

• 30-pin plastic SSOP (7.62 mm (300))

Note Although the circuit configuration is identical, its electrical characteristics differ depending on the product.

6

Data Sheet U14542EJ1V0DS00

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