參數資料
型號: MC68HC705CL48
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 1.802 MHz, MICROCONTROLLER, PQFP112
封裝: TQFP-112
文件頁數: 8/145頁
文件大?。?/td> 673K
代理商: MC68HC705CL48
June 11, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05CL48
LCD DRIVER
MOTOROLA
REV 2.0
12-9
12.5
ELECTRICAL REQUIREMENTS
The contrast network will be monotonic under the normal operating conditions.
Note: Both ladder resistors and the contrast resistors are implemented using poly
resistor to minimize process and temperature variation.
12.5.1 DC Requirements
The DC voltage between Front-plane to Back-plane will be less than 50mV,
average over one frame. For VLCD = 3 to 5 volts and temperature range of –10°C
to 70
°C.
Table 12-4. Ladder Voltage Values
VLCD=5.0 volts
4:1 Bias
V5-V4
1.25
± 4%
V4-V3
1.25
± 4%
V3-V2
0
± 4%
V2-V1
1.25
± 4%
V1-V0
1.25
± 4%
Table 12-5. Contrast Resistor Values
Resistor
Resistor Values (ohm)
+/- 25%
RC0
10k
RC1
20k
RC2
40k
RC3
80k
R1
100k
R2
100k
R3
100k
R4
100k
R5
100k
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