參數(shù)資料
型號: HD66726
廠商: Hitachi,Ltd.
英文描述: Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動器)
中文描述: 圖形液晶顯示控制器/鍵掃描功能(帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動器驅(qū)動程序)
文件頁數(shù): 15/117頁
文件大?。?/td> 1549K
代理商: HD66726
HD66726
15
Table 2
Pin Functional Description (cont)
Signals
Number of
Pins
I/O
Connected to
Functions
VLOUT
3
O
V
pin/booster
capacitance
Potential difference between Vci and GND is single-
to quadruple-boosted and then output. Magnitude of
boost is selected by instruction.
C1+, C1–
8
Booster
capacitance
External capacitance should be connected here when
using the double, triple, or quadruple booster.
C2+, C2–
8
Booster
capacitance
External capacitance should be connected here when
using the triple or quadruple booster.
C3+, C3–
8
Booster
capacitance
External capacitance should be connected here when
using the quadruple booster.
RESET*
1
I
MPU or external
R-C circuit
Reset pin. Initializes the LSI when low.
Must reset after power on.
OPOFF
1
I
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.
VccDUM
1
O
Input pins
Outputs the internal V
level; shorting this pin sets
the adjacent input pin to the V
CC
level.
Outputs the internal GND level; shorting this pin sets
the adjacent input pin to the GND level.
GNDDUM
1
O
Input pins
TEST
1
I
GND
Test pin. Must be fixed at GND level.
VTEST1
1
I
V
CC
or GND
Controls LCD driving power of the interval operational
amplifier. When VTEST1 = GND, normal power
driving mode is selected. And VTEST1 = V
CC
, high
power driving mode is selected.
VTEST2
1
Open
Test pin. Must be left disconnected.
VTEST3
1
V
CC
or GND
Adjust the driving ability of the internal LCD
operational amplifier. Normal or high power drive
mode in the GND side, low-power drive mode in the
V
CC
side.
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