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參數(shù)資料
| 型號(hào)： | HCD66727A04BP |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| 中文描述： | 低功耗點(diǎn)陣液晶顯示控制器/鍵掃描功能驅(qū)動(dòng)程序 |
| 文件頁數(shù)： | 14/97頁 |
| 文件大?。?/td> | 513K |
| 代理商： | HCD66727A04BP |
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HD66727
14
Table 3
Pin Functional Description (cont)
Signal
Number of
Pins
I/O
Connected to
Function
Vci
2
I
Power supply
Inputs a reference voltage and supplies power to the
booster; generates the liquid crystal display drive
voltage from the operating voltage.
Vci = 1.0V to 5.0V
≤
V
CC
Voltage input to the Vci pin is boosted twice and output.
When the voltage is boosted three times, the same
capacitance as that of C1–C2 should be connected
here.
V5OUT2
3
O
V
pin/booster
capacitance
V5OUT3
2
O
V
EE
pin
Voltage input to the Vci pin is boosted three times and
output.
C1, C2
6
—
Booster
capacitance
External capacitance should be connected here when
using the booster.
RESET*
1
I
MPU or external
R-C circuit
Reset pin. Initializes the LSI when low. Be sure to input
this signal after power-on.
EXM
1
I
MPU
External alternating signal used for annunciator display
in the standby mode. If annunciator display is not used,
EXM must be fixed to V
CC
or GND.
Turns the internal operational amplifier off when OPOFF
= V
, and turns it on when OPOFF = GND. If the
amplifier is turned off (OPOFF = V
), V1 to V5 must be
supplied to the V1OUT to V5OUT pins.
OPOFF
1
I
V
CC
or GND
V
CC
dummy 2
0
Input pad
Outputs V
CC
supply level; can fix the input pads to V
CC
level.
TEST
1
I
GND
Test pin. Must be fixed at GND level.
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