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コンポーネント説明
UPD6464ACS データシートの表示(PDF) - NEC => Renesas Technology
部品番号
コンポーネント説明
メーカー
UPD6464ACS
ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR
NEC => Renesas Technology
UPD6464ACS Datasheet PDF : 52 Pages
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DATA 3
CLK 1
CS 2
Data input
shift register
Data buffer register
Instruction decoder
External/
internal
register
NTSC/
PAL/
PAL-M/
SECAM/
PAL-N
Note
register
Character size
register
Horizontal size
counter
Horizontal address
register
Write address
counter
Horizontal
position counter
Horizontal
address counter
OSC
IN
6
L
OSC
OSC
OUT
5
C
OSCIN
C
OSCOUT
Vertical address
register
Vertical size
counter
Vertical position
counter
Vertical address
counter
Control signal
Video RAM
Character
data
7 bits (
µ
PD6464A)
8 bits (
µ
PD6465)
×
288 words
Blink data
1 bit
×
288 words
Character generator
ROM
12
×
18 bits
×
128 words (
µ
PD6464A)
256 words (
µ
PD6465)
4 V
DD
8 GND
19 TEST
7 PCL
17
CSYIN
15 16
HSYO VSYO
Note
µ
PD6464A only
10 9
11 12
FSCO FSCI XOSO XOSI
Output controller
13 14 20 21 22 23 24
V
C
V
BLK
VBSO
V
CNT
VBSI
NRE SECAM
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