YGV639

8

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The meaning of [Attribute] column is as follows:

■ Analog: analog pin

■ tolerant: tolerant attribute represents that current does not flow to a power supply pin from the

voltage-applied pin, when voltage higher than supply voltage is applied to the pin.

However, since this pin cannot withstand 5V, it is necessary to make the voltage difference between the

pin and the power supply voltage less than 3.6V. Therefore, voltage exceeding 3.6V (maximum of

recommended operation voltage) cannot be applied to it without the supply of power (supply voltage =

0V).

■ 5V tolerant: 5V tolerant attribute means the pin has a withstand voltage of 5V. That is, 5V can be applied

to this pin when supply voltage is 0V.

Dual-purpose Pin

Sharing CPU Interface Pins

VC1E supports the two types of CPU interfaces: serial and parallel interfaces. Pins are shared by the

interfaces as follows:

Pin Name

Parallel Interface

(SER_N=H)

Serial Interface Chip Select

(SER_N=L)

D7-0

D7-0

Unused

PS2-0

PS2-0

Unused

CS_N

CS_N

SCS_N

RD_N

RD_N

SDIN

WR_N

WR_N

SCLK

WAIT_N

WAIT_N

SDOUT

READY_N

READY_N

Unused

INT_N

INT_N

INT_N

Sharing Timing-Controller Pins

VC1E has a built-in LCD timing controller and this function can be enabled by TCONE pin setting. The

following pins are shared depending on whether the timing controller is enabled or disabled.

Pin Name

Timing controller disabled

(TCONE=L)

Timing controller enabled

(TCONE=H)

DR5-0

DR5-0

DR5-0

DG5-0

DG5-0

DG5-0

DB5-0

DB5-0

DB5-0

DOTCLK

DOTCLK

DOTCLK

HCSYNC_N

HCSYNC_N

CLKV

VSYNC_N

VSYNC_N

POL

BLANK_N

BLANK_N

STARTV

PLLCTL3

PLLCTL3

LOADH

PLLCTL2

PLLCTL2

STARTH

PLLCTL1

PLLCTL1

OUTENV