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参数资料
型号： S1D13706F00A
元件分类： 显示控制器
英文描述： 320 X 240 PIXELS CRT OR FLAT PNL GRPH DSPL CTLR, PQFP100
封装： TQFP-100
文件页数： 84/171页
文件大小： 4940K
代理商： S1D13706F00A
APPENDIX
Appendix 3. Control registers
7751 Group User’s Manual
20–23
Pulse width modulation (PWM) mode
b7
b0
b7
b0
Timer A0 register (Addresses 4716, 4616)
Timer A1 register (Addresses 4916, 4816)
Timer A2 register (Addresses 4B16, 4A16)
Timer A3 register (Addresses 4D16, 4C16)
Timer A4 register (Addresses 4F16, 4E16)
Functions
Bit
At reset
RW
15 to 0 These bits can be set to “000016” to “FFFE16.”
Assuming that the set value = n, the “H” level
width of the PWM pulse output from the
TAiOUT pin is expressed as follows:
Undefined
<When operating as a 16-bit pulse width modulator>
(b15)
(b8)
WO
n
fi
fi: Frequency of count source (f2 / f4, f16 / f32, f64 / f128, or f512 / f1024)
<When operating as an 8-bit pulse width modulator>
(b15)
b7
b0
b7
b0
(b8)
Timer A0 register (Addresses 4716, 4616)
Timer A1 register (Addresses 4916, 4816)
Timer A2 register (Addresses 4B16, 4A16)
Timer A3 register (Addresses 4D16, 4C16)
Timer A4 register (Addresses 4F16, 4E16)
Functions
Bit
At reset
RW
7 to 0
15 to 8
Undefined
These bits can be set to “0016” to “FF16.”
Assuming that the set value = m, PWM
pulse’s period output from the TAiOUT pin is
expressed as follows:
(m + 1)(28 – 1)
fi
WO
These bits can be set to “0016” to “FE16.”
Assuming that the set value = n, the “H” level
width of the PWM pulse output from the
TAiOUT pin is expressed as follows:
n(m + 1)
fi
WO
fi: Frequency of count source (f2 / f4, f16 / f32, f64 / f128, or f512 / f1024)
b7
b6
b5
b4
b3
b2
b1
b0
Timer Ai mode register (i = 0 to 4) (Addresses 5616 to 5A16)
7
0 0 : f2 / f4
0 1 : f16 / f32
1 0 : f64 / f128
1 1 : f512 / f1024
b7 b6
Count source select bits
11
1
At reset
0
RW
Trigger select bits
Fix this bit to “1” in PWM mode.
1
Operating mode select bits
Bit name
Functions
1 1 : PWM mode
b1 b0
b4 b3
16/8-bit PWM mode select bit
0 0 :
Writing “1” to count start register
0 1 :
(TAiIN pin functions as a pro-
grammable I/O port.)
1 0 : Falling edge of TAiIN pin’s input signal
1 1 : Rising edge of TAiIN pin’s input signal
Bi t
0 : As a 16-bit pulse width modulator
1 : As an 8-bit pulse width modulator
4
0
2
3
5
6
0
RW
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