HD6473887 Datasheet, PDF(362/523 Page) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

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HD6473887 Datasheet, PDF (362/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

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13.1.3 Pin Configuration

Table 13-1 shows the LCD controller/driver pin configuration.

Table 13-1 Pin Configuration

Name

Segment output pins

Abbrev.

I/O

SEG40 to SEG1 Output

Common output pins

COM4 to COM1 Output

Segment external expansion CL1

signal pin

CL2

M

Output

Output

Output

DO

Output

LCD power supply pins

V0, V1, V2, V3

â

Function

LCD segment drive pins

All pins are multiplexed as port pins

(setting programmable)

LCD common drive pins

Pins can be used in parallel with static

or 1/2 duty

Multiplexed as the display data latch

clock, SEG40

Multiplexed as the display data shift

clock, SEG39

Multiplexed as the LCD alternating

signal, SEG37

Multiplexed as the serial display data,

SEG38

Used when a bypass capacitor is

connected externally, and when an

external power supply circuit is used

13.1.4 Register Configuration

Table 13-2 shows the register configuration of the LCD controller/driver.

Table 13-2 LCD Controller/Driver Registers

Name

LCD port control register

LCD control register

LCD control register 2

LCD RAM

Clock stop register 2

Abbrev.

LPCR

LCR

LCR2

â

CKSTPR2

R/W

Initial Value Address

R/W

H'00

H'FFC0

R/W

H'80

H'FFC1

R/W

H'60

H'FFC2

R/W

Undefined

H'F740 to H'F753

R/W

H'FF

H'FFFB

345

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