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參數資料
| 型號： | ST7066-0B |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數據表參考 |
| 文件頁數： | 5/30頁 |
| 文件大小： | 363K |
| 代理商： | ST7066-0B |
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ST7066
Pin Functions
NAME
V1.1
1999/12/29
5
NUMBER I/O
INTERFACED WITH
FUNCTION
RS
1
I
MPU
Select registers.
0: Instruction register (for write) Busy flag:
address counter (for read)
1: Data register (for write and read)
Select read or write.
0: Write
1: Read
Starts data read/write.
Four high order bi-directional tristate data bus
pins. Used for data transfer and receive
between the MPU and the ST7066. DB7 can
be used as a busy flag.
Four low order bi-directional tristate data bus
pins. Used for data transfer and receive
between the MPU and the ST7066.
These pins are not used during 4-bit operation.
Clock to latch serial data D sent to the
extension driver
Clock to shift serial data D
Switch signal for converting the liquid crystal
drive waveform to AC
Character pattern data corresponding to each
segment signal
Common signals that are not used are changed
to non-selection waveform. COM9 to COM16
are non-selection waveforms at 1/8 duty factor
and COM12 to COM16 are non-selection
waveforms at 1/11 duty factor.
Segment signals
Power supply for LCD drive
V
CC
- V5 = 11 V (Max)
V
CC
: 2.7V to 5.5V, GND: 0V
When crystal oscillation is performed, a resistor
must be connected externally. When the pin
input is an external clock, it must be input to OSC1.
R/W
1
I
MPU
E
1
I
MPU
DB4 to DB7
4
I/O
MPU
DB0 to DB3
4
I/O
MPU
CL1
1
O
Extension driver
CL2
1
O
Extension driver
M
1
O
Extension driver
D
1
O
Extension driver
COM1 to COM16
16
O
LCD
SEG1 to SEG40
40
O
LCD
V1 to V5
5
-
Power supply
V
CC
, GND
2
-
Power supply
OSC1, OSC2
2
Oscillation
resistor clock
Note:
1. Vcc>=V1>=V2>=V3>=V4>=V5 must be maintained
2. Two clock options:
R
OSC1
1
OSC2
1
OSC1
1
OSC2
1
Clock
input
R=91K
(Vcc=5V)
R=75K
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