參數(shù)資料
型號: M34551E8FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件頁數(shù): 129/155頁
文件大小: 1329K
代理商: M34551E8FP
4551 Group User’s Manual
HARDWARE
1-63
CONTROL REGISTERS (CONTINUED)
Not used
LCD on/off bit
LCD duty and bias selection bits
LCD control register L1
L13
L12
L11
L10
at reset : 00002
at power down : state retained
0
1
0
1
R/W
This bit has no function, but read/write is enabled
Off
On
Not available
L11
0
1
L10
0
1
0
1
Duty
1/2
1/3
1/4
Bias
1/2
1/3
LCD control register L2
at reset : 11112
at power down : state retained
W
0
1
0
1
0
1
0
1
SEG19
P23
SEG18
P22
SEG17
P21
SEG16
P20
L23
L22
L21
L20
P23/SEG19 pin function switch bit
P22/SEG18 pin function switch bit
P21/SEG17 pin function switch bit
P20/SEG16 pin function switch bit
4-bit general-purpose register.
The data transfer between register A and this register is performed with the TV2A and TAV2 instructions.
at reset : 00002
General-purpose register V2
at power down : 00002
R/W
Note: “R” represents read enabled, and “W” represents write enabled.
CONTROL REGISTERS
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