参数资料
型号: EM6640SO18B
英文描述: Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 10-DFN
中文描述: 微控制器
文件页数: 40/62页
文件大小: 620K
代理商: EM6640SO18B
EM6640
03/02 REV. C/446
Copyright
2002, EM Microelectronic-Marin SA
45
www.emmicroelectronic.com
14. Option Register Memory Map
The values of the Option Registers are set only by initial reset on power up and through write operations. Other resets as
reset from watchdog, reset from input PortA, etc... do not change the Options Register value.
Register
name
add
hex
add
dec
power up
value
read_bits
write_bits
Remarks
b’3210
Read/Write_bits
OPTSlpCntRst
OPT[47 :44]
72
114
0000
0 : RstSlpTSel[0]
1 : RstSlpTSel[1]
2 : RstSlpTSel[2]
3 : EnSlpCntRst[3]
option register ;
Sleep Counter Reset
default : SCR disable
OPTDebIntPA
OPT[3 :0]
73
115
0000
0 : NoDebIntPA[0]
1 : NoDebIntPA[1]
2 : NoDebIntPA[2]
3 : NoDebIntPA[3]
option register ;
debouncer on PortA
for interrupt gen.
Default : debouncer on
OPTIntEdgPA
OPT[7 :4]
74
116
0000
0 : IntEdgPA[0]
1 : IntEdgPA[1]
2 : IntEdgPA[2]
3 : IntEdgPA[3]
option register ;
interrupt edge select on PortA
default : pos edge
OPTNoPullPA
OPT[11 :8]
75
117
0000
0 : NoPdPA[0]
1 : NoPdPA[1]
2 : NoPdPA[2]
3 : NoPdPA[3]
option register ;
pull-up/down selection on PortA
default : pull-down
OPTNoPdPB
OPT[15 :12]
76
118
0000
0 : NoPdPB[0]
1 : NoPdPB[1]
2 : NoPdPB[2]
3 : NoPdPB[3]
option register ;
pulldown selection on PortB
default : pull-down
OPTNoPdPC
OPT[19 :16]
77
119
0000
0 : NoPdPC0]
1 : NoPdPC[1]
2 : NoPdPC[2]
3 : NoPdPC[3]
option register ;
pulldown selection on PortC
default : pull-down
OPTNchOpDPB
OPT[23 :20]
78
120
0000
0 : NchOpDPB[0]
1 : NchOpDPB[1]
2 : NchOpDPB[2]
3 : NchOpDPB[3]
option register ;
n-channel open drain
output on PortB
default : CMOS output
OPTNchOpDPC
OPT[27 :24]
79
121
0000
0 : NchOpDPC[0]
1 : NchOpDPC[1]
2 : NchOpDPC[2]
3 : NchOpDPC[3]
option register ;
n-channel open drain
output on PortC
default : CMOS output
OPTPaRST
OPT[31 :28]
7A
122
0000
0 : NoInputReset
1 : SelinpResMod
2 : OscAdj[4]
3 : OscAdj[5]
-PortA input reset option, input
reset mode (Or or AND logic).
-Adjustment of RC oscillator
(2 MSB) in EEPROM
OPTOscAdj
OPT[35 :32]
7B
123
0000
0 : OscAdj[0]
1 : OscAdj[1]
2 : OscAdj[2]
3 : OscAdj[3]
option register ;
Adjustment of RC oscillator
(4 LSB) in EEPROM
OPTFselPB
OPT[39 :36]
7C
124
0000
0 : PB600kHzOut
1 : PB37k5HzOut
2 : PB2k3HzOut
3 : --
option register ;
frequency output on PortB
OPTInpRSel1
7D
125
0000
0 : InpRes1PA[0]
1 : InpRes1PA[1]
2 : InpRes1PA[2]
3 : InpRes1PA[3]
option register ;
reset through PortA inputs
selection,
refer to reset part
OPTInpRSel2
7E
126
0000
0 : InpRes2PA[0]
1 : InpRes2PA[1]
2 : InpRes2PA[2]
3 : InpRes2PA[3]
option register ;
reset through PortA inputs
selection,
refer to reset part
RegTestEM
7F
127
----
accu
for EM test only ;
write accu on PortA
Test = 1
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