HD61830 Datasheet, PDF (5/43 Pages) Hitachi Semiconductor – LCDC (LCD Timing Controller)

HD61830/HD61830B
Terminal Functions
Symbol
DB0–DB7
CS
R/W
RS
E
CR
C
R
CPO
CE
OE
NC
MA0–MA15
MD0–MD7
RD0–RD7
WE
CL2
CL1
FLM
MA
MB
D1
D2
Pin Number
28–21
15
17
18
16
8
6
7
9
6
7
9
4–1, 60–49
37–30
45–38
13
46
11
10
19
5
47
48
I/O Function
I/O Data bus: Three-state I/O common terminal
Data is transferred to MPU through DB0 to DB7.
I
Chip select: Selected state with CS = 0
I
Read/Write:R/W = 1: MPU ← HD61830
R/W = 0: MPU → HD61830
I
Register select: RS = 1: Instruction register
RS = 0: Data register
I
Enable: Data is written at the fall of E
Data can be read while E is 1
I
CR oscillator (HD61830), External clock input (HD61830B)
— CR oscillator to capacitor (HD61830 only)
— CR oscillator to resistor (HD61830 only)
O Clock signal for HD61830 in slave mode (HD61830 only)
O Chip enable (HD61830B only)
CE = 0: Chip enables make external RAM in active
O Output enable (HD61830B only)
OE = 1: Output enable informs external RAM that HD61830B requires
data bus
Open Unused terminal. Don’t connect any wires to this terminal
(HD61830B only)
O External RAM address output
In character mode, the line code for external CG is output through
MA12 to MA15 (0: Character 1st line, F: Character 16th line)
I/O Display data bus: Three-state I/O common terminal
I
ROM data input: Dot data from external character generator is input
O Write enable: Write signal for external RAM
O Display data shift clock for LCD drivers
O Display data latch signal for LCD drivers
O Frame signal for display synchronization
O Signal for converting liquid crystal driving signal into AC, A type
O Signal for converting liquid crystal driving signal into AC, B type
O Display data serial output
D1: For upper half of screen
D2: For lower half of screen
SYNC
12
RES
14
I/O Synchronous signal for parallel operation
Three-state I/O common terminal (with pull-up MOS)
Master: Synchronous signal is output
Slave: Synchronous signal is input
I
Reset: Reset = 0 results in display off, slave mode and H_p = 6
5