3819 datasheet(52/218 Pages) RENESAS

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3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

q Data Setup

When data is stored in the FLD automatic display RAM, the

last data of segment PA is stored at address 0F8016, the last

data of segment P8 is stored at address 0F9016, the last data

of segment P9 is stored at address 0FA016, the last data of

segment P3 is stored at address 0FB016, the last data of seg-

ment P0 is stored at address 0FC016, and the last data of

segment P1 is stored at address 0FD016 to allocate in se-

quence from the last data respectively. The first data of the

segment PA, P8, P9, P3, P0, and P1 is stored at an address

which adds the value of (the digit number–1) to the corre-

sponding address 0F8016, 0F9016, 0FA016, 0FB016, 0FC016,

and 0FD016.

Set the low-order 4 bits of the FLD data pointer reload register

to the value given by the number of digits–1. “1” is always writ-

ten to bit 6 and bit 4, and “0” is always written to bit 5. Note that

“0” is always read from bits 6, 5 and 4 when reading.

Fig. 32 Example of using the FLD automatic display RAM (1)

For 30 segments and 15 digits

(FLD data pointer reload register = 14)

0F8016

Bit

Address

543

0F8116

0F8216

0F8316

0F8416

0F8516

0F8616

0F8716

0F8816

0F8916

0F8A16

0F8B16

0F8C16

0F8D16

0F8E16

0F8F16

0F9016

0F9116

0F9216

0F9316

0F9416

0F9516

0F9616

0F9716

0F9816

0F9916

0F9A16

0F9B16

0F9C16

0F9D16

0F9E16

0F9F16

0FA016

0FA116

0FA216

0FA316

0FA416

0FA516

0FA616

0FA716

0FA816

0FA916

0FAA16

0FAB16

0FAC16

0FAD16

0FAE16

0FAF16

Note :

Shaded areas are used.

For 30 segments and 15 digits

(FLD data pointer reload register = 14)

0FB016

Bit

Address

543

0FB116

0FB216

0FB316

0FB416

0FB516

0FB616

0FB716

0FB816

0FB916

0FBA16

0FBB16

0FBC16

0FBD16

0FBE16

0FBF16

0FC016

0FC116

0FC216

0FC316

0FC416

0FC516

0FC616

0FC716

0FC816

0FC916

0FCA16

0FCB16

0FCC16

0FCD16

0FCE16

0FCF16

0FD016

0FD116

0FD216

0FD316

0FD416

0FD516

0FD616

0FD716

0FD816

0FD916

0FDA16

0FDB16

0FDC16

0FDD16

0FDE16

0FDF16

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