UPD6464A中文资料瑞萨数据手册PDF规格书

FEATURES

• Video signal input/output : Composite video signal

• Number of display characters : 12 lines, 24 columns (288 characters)

• Number of character types : 128 (mPD6464A)/256 (mPD6465) (ROM). Variable by mask code option.

• Character size : 1 dot/1 line. 2 lines (field) can be displayed in line units.

• Character color : White (single color)

• Background : No background, black framing, black-on-white, and black filling

• Dot matrix : 12 (horizontal) ´ 18 (vertical) dots without gap between adjacent characters

• Blinking : Blinking can be turned ON/OFF in character units. Blinking ratio is 1:1.

Blinking frequency is selectable from about 0.5 Hz, 1 Hz, and 2 Hz in screen units.

• Character signal output: : Can support VCRs with S pins if external mixer is connected because

character signal and blanking signal output pins are provided.

• Video RAM data clear : Video RAM data are cleared by video RAM clear command and power-ON

clear function.

• Supported video signal method : NTSC/PAL/PAL-M/SECAM/PAL-N (mPD6464A only)

• Internal circuit : Synchronization separation circuit for composite synchronizing signal and ´4 multiplier

• Interface with microcomputer : Serial input type of 8-bit variable word length

• Supply voltage : +5 V, single power supply