m35053 Renesas Electronics Corporation., m35053 Datasheet - Page 23

• Manufacturer Part Number: m35053
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

Encode functions (effective for NTSC only)
(1) Setting encode data
Setting data code (000 – 111) in EC0 through EC2 (bits DA8 through
DAA) of the display RAM (addresses 0 through EF
sample setting and data code are shown below.
Fig. 12 An example of data code setting
22
An example of setting
(address) (Note)
EC2 ~ EC0=
A suite of data code (000 – 111) for encoding to be set in EC2 through EC0 are assigned as given below.
EC2
0
0
0
0
1
1
1
1
100
(0)
EC1
0
0
1
1
0
0
1
1
100 100 101
(1)
EC0
5 characters
0
1
0
1
0
1
0
1
fixed
(2)
12 dots
Data
L H L H
L H L
16
H L
H H
L
L H
(3)
) encodes. A
L
001
(4)
18 dots
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
LSB
Set by every 2 bits (one character) with EC2 to EC0.
(5)
Can not be used
No encoding
Note: Refer to the next page about address setting.
1H
2 bit / a character
(Set one code of 000 to 011)
(6)
(7)
16 bit data
The oscillation frequency when
encoding: 3 MHz
1 clock cycle: 0.333 s
1 character (12 dots): 3.996 s
2 bits/1 character: 3.996 s
1 bit: 1.998 s
····· 192
8 characters
frequency)
for f
(8)
H
MITSUBISHI MICROCOMPUTERS
= 15.625 kHz
f
H
(9)
(horizontal synchronous
M35053-XXXSP/FP
(10)
(11)
(12)
MSB