UPD17062 datasheet(35/298 Pages) RENESAS

Il numero della parte	UPD17062

Spiegazioni elettronici	MOS INTEGRATED CIRCUIT

PDF	298 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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µPD17062

5.1.4

Structure of Port Data Registers (port register)

The port registers consist of 12 nibbles at addresses 70H to 73H of the banks of data memory.

Fig. 5-5 shows the structure of the port registers.

As shown in Fig. 5-5, the same port registers are allocated in BANK0 and BANK2. Thus, the port registers

actually consist of eight nibbles.

Fig. 5-5

Structure of Port Registers

5.1.5

Structure of General-Purpose Data Memory

General-purpose data memory consists of that part of memory other than the system register and the port

registers of data memory.

General-purpose data memory consists of a total of 336 words, with 112 words in each of BANK0 to BANK2.

5.1.6

Unmounted Data Memory

As shown in Fig. 5-6, nothing is assigned to bit 0 of address 72H in BANK1 of the port registers. For an

explanation of this address, see Section 5.3.2.

70H

71H

72H

73H

P0A

P0B

P0C

P0D

P1A

P1B

P1C

Fixed at 0

BANK0

BANK2

BANK1

Port register

Address

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