PD62_15 datasheet(13/66 Pages) RENESAS

Part #	PD62

Description	4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

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Manufacturer	RENESAS [Renesas Technology Corp]

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13 / 66 page

11

µPD62

Data Sheet U14208EJ1V0DS00

Figure 2-4. Data Memory Organization

R0

R1

R2

R3

R4

R5

R6

R7

R8

R9

RA

RB

RC

RD

RE

RF

R10

R00

R11

R01

R12

R02

R13

R03

R14

R04

R15

R05

R16

R06

R17

R07

R18

R08

R19

R09

R1A

R0A

R1B

R0B

R1C

R0C

R1D

R0D

R1E

R0E

R1F

R0F

→DP (refer to 2.6 Data Pointer (DP))

→ASR (refer to 2.3 Address Stack Register (ASR (RF)))

R1n (high-order 4 bits) R0n (low-order 4 bits)

2.6 Data Pointer (DP): 10 Bits

The ROM data table can be referenced by setting the ROM address in the data pointer to call the ROM contents.

The low-order 8 bits of the ROM address are specified by R0 of the data memory; and the high-order 2 bits by

bits 4 and 5 of the P3 register (CR0).

When reset, the pointer contents become “000H”.

Figure 2-5. Data Pointer Organization

2.7 Accumulator (A): 4 Bits

The accumulator, which refers to a register consisting of 4 bits, plays a leading role in performing various

operations.

When reset, the accumulator contents are left undefined.

Figure 2-6. Accumulator Organization

A3

A2

A1

A0

A

R00

DP9

DP8

DP7

DP6

DP5

DP4

DP3

DP2

DP1

DP0

R10

P3

R0

b4

b5

P3 Register

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PD62 Datasheet(PDF) 13 Page - Renesas Technology Corp

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