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| 型号： | EM78459 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC |
| 中文描述： | 8位微控制器的通用产品 |
| 文件页数： | 6/57页 |
| 文件大小： | 854K |
| 代理商： | EM78459 |
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EM78458/459
MASK ROM
This specification is subject to change without prior notice.
2002/03/01
14
1 = The Vref of the ADC is connected to P53/VREF.
Bit 6 (CE): Comparator enable bit
0 = Comparator is off (default value);
1 = Comparator is on.
Bit 5 ( COE ): Set P57 as the output of the comparator
0 = the comparator acts as an OP if CE=1.
1 = act as a comparator if CE=1.
Bit4:Bit2 (IMS2:IMS0):
Input Mode Select. ADC configuration definition bit. The following Table describes how to define the
characteristic of each pin of R6.
Table 3 Description of AD Configuration Control Bits
IMS2:IMS0
P60
P61
P62
P63
P64
P65
P66
P67
000
A
D
001
A
D
010
A
D
011
A
D
100
A
D
101
A
D
110
A
D
111
A
Bit 1: Bit 0 (CKR1: CKR0): The prescaler of oscillator clock rate of ADC
00 = 1: 4 (default value);
01 = 1: 16;
10 = 1: 64;
11 = 1: WDT ring oscillator frequency.
6. IOCB0 (Pull-down Control Register)
7
6
5
4
3
2
1
0
/PD7
/PD6
/PD5
/PD4
/PD3
/PD2
/PD1
/PD0
Bit 0 (/PD0) Control bit is used to enable the pull-down of the P60 pin.
0: Enable internal pull-down;
1: Disable internal pull-down.
Bit 1 (/PD1) Control bit is used to enable the pull-down of the P61 pin.
Bit 2 (/PD2) Control bit is used to enable the pull-down of the P62 pin.
Bit 3 (/PD3) Control bit is used to enable the pull-down of the P63 pin.
Bit 4 (/PD4) Control bit is used to enable the pull-down of the P64 pin.
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