參數(shù)資料
型號(hào): M37902FGCHP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 26 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 120/143頁
文件大?。?/td> 1148K
代理商: M37902FGCHP
M37902FCCHP, M37902FGCHP, M37902FJCHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
78
Fig. 79 Bit configuration of A-D control register 1
0
76543210
A-D sweep pin select bits (Note 1)
(Valid in the single sweep mode and repeat sweep mode.)
0 0 : AN0, AN1
0 1 : AN0–AN3
1 0 : AN0–AN5
1 1 : AN0–AN7
Must be “0”.
Resolution select bit
0: 8-bit mode
1: 10-bit mode
A-D conversion frequency (
φAD) select bit 1
External trigger polarity select bit
(Valid when external trigger is selected.)
0: Falling edge of input signal to the ADTRG pin
1: Rising edge of input signal to the ADTRG pin
VREF connection select bit (Note 6)
0 : VREF is connected.
1 : VREF is not connected.
“0” at read.
(2 pins)
(4 pins)
(6 pins) (Notes 2, 3)
(8 pins) (Notes 2 to 5)
A-D control register 1
Address
1F16
A-D conversion frequency (
φAD) select bit
Bit 1
0
1
0
1
Bit 0
φAD
f2/4
f2/2
f2
1
f1 (Selectable only in 8-bit mode)
Notes 1: Ignored in the one-shot and repeat modes. (Each of these bits may be “0” or “1”.)
2: When using the AN4 pin, be sure to clear the INT3 pin select bit (bit 5 at address 9416) to “0”.
3: When using the AN5 pin, be sure to clear the INT4 pin select bit (bit 6 at address 9416) to “0”.
4: When using the AN6 pin, be sure to clear the D-A0 output enable bit (bit 0 at address 9616) to
“0” (output disabled).
5: When using the AN7 pin, be sure to clear both of the INT2 pin select bit (bit 4 at address 9416)
and the D-A1 output enable bit (bit 1 at address 9616) to “0”. When an external trigger is selected,
the AN7 pin cannot be used as an analog input pin.
6: Once this bit is cleared from “1” to “0”, it is necessary to wait for 1
s or more before the A-D or
D-A conversion starts.
7: Rewriting to each bit of the A-D control register 1 must be performed while A-D conversion is stopped.
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