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116
117
118
119
120
121
122-124
CRTCLK
o
*2
Output clock signal to the MN1288 in the
CRT mode
(connect to
eLK
pin of the
MN1288)
LPSTB
o
*1
Output light pen strobe signal to the
MN1288 This signal is LOW in
lCD mode.
DSPTMG
I
Input signal of DISPTMG from the MN1288
CUDISP
I
Input signal of CUDISP from the MN1288
CUR CON
0
*2
Output signal to control the cursor blinking
(connect to EXTCU of the
MN1288)
VDD
+5V Power supply
NC
Not connected
Figure 2-2. Pin descriptions (Part 3 of 4)
Notes:
*1: These pins are 'LOW' when the CE is 'HIGH'.
"'2: These pins are 'High-Z' when the
CE
is 'HIGH'.
3. MN1294 BLOCK DIAGRAM
-
P C-7200
M08-MOO
A3-~7-DO
lOR, lOW, MEMW
[--------r----
-
--
---
---------- -----
-
-
-- --
-
----
----
-------
-- -
-
-- --
----- --
.
.,
2BYTE
WIDE
ENROM
CATes
14M
RAO, MA12
CHACLK
MACLK
CRT/LCD
1S/28
CPMES
ADRDEC
LCDCLK
CRTCLK
DIR, GATE
XACK
RAMA
CURCON
PGAD1
PGAD2
OE, WE
RAS, CAS
CRTRA
CRTCA
CPURA
CPUCA
:
110 BUFFER
I
,
r
:
MODE
,
CONTROL
,
1
,
,
TIMING
,
GENERATER
,
J
, ,
, ,
:
TIMING
CONTROL
,
,
,
,
r
, ,
,
rl
,
l.U.T.
,
:
J
,
, ,
LCD
, ,
~
ATTRIBUTE
,
,
CONTROL
I
I
DATA
LATCH
DATA
LATCH
LCD
GRAPHICS
DATA
CONTROL
r
I
COLOR
SELECT
REGISTER
I
GRAPHICS
f------,
PIS
CHARACTE~f__-.,I-'------
PiS
STATUS
REGISTER
I
LIGHT PEN
CONTROL
COLOR
ENCODER
COLOR
:
,
______ 1.. _________
, ,
L __
_____
~~I~~~
_______
J ___
t ____
L _ t _ -----
--~~~~~~~~~---
----
VDD
VSS
RESET
CE
LCORV
An, ATD
ccs-cco
RD7-ROO
MODE1
MODED
Figure 3-1. MN1294 block diagram
7-16
, ,
,
,
,
,
, ,
, ,
,
,
,
,
:
,
,
,
,
,
,
,
,
,
,
,
,
,
HSYNC
VSYNC
OSPTMG
CUDISP
LPSTB
LPSW
LPIN
v
H
A
G
B
I
COLOR
BLANK
SYN
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