EM6620WS27 datasheet(42/56 Pages) EMMICRO

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EM6620

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14. Option Register Memory Map

The values of the Option Registers are set by initial reset on power up and through write

operations only. Other resets as reset from watchdog, reset from input port A do not change the

options register value.

Name

Add

Hex

Add

Dec

Power

Value

Read Bits

Write Bits

Remarks

b'3210

Read / Write Bits

OPTDebIntPA

OPT[3:0]

117

0000

0: NoDebIntPA[0]

1: NoDebIntPA[1]

2: NoDebIntPA[2]

3: NoDebIntPA[3]

Option register;

debouncer on Port A

for interrupt gen.

default: debouncer on

OPTIntEdgPA

OPT[7:4]

118

0000

0: IntEdgPA[0]

1: IntEdgPA[1]

2: IntEdgPA[2]

3: IntEdgPA[3]

Option register;

interrupt edge select on port A

default: pos. edge

OPTNoPullPA

OPT[11:8]

119

0000

0: NoPullPA[0]

1: NoPullPA[1]

2: NoPullPA[2]

3: NoPullPA[3]

option register;

pull-down selection on port A

default: pull-down

OPTNoPdPB

OPT[15:12]

120

0000

0: NoPdPB[0]

1: NoPdPB[1]

2: NoPdPB[2]

3: NoPdPB[3]

Option register;

pull-down selection on port B

default: pull-down

OPTNchOpDPB

OPT[19:16]

121

0000

0: NchOpDPB[0]

1: NchOpDPB[1]

2: NchOpDPB[2]

3: NchOpDPB[3]

Option register;

n-channel open drain

output on port B

default: CMOS output

OPTFSelPB

OPT[31:28]

123

0000

0: NoInputReset

1: PB32kHzOut

2: PB2kHzOut

3: PB1HzOut

Option register;

port A input reset selection,

frequency output on port B

OptInpRSel1

124

0000

0: InpRes1PA[0]

1: InpRes1PA[1]

2: InpRes1PA[2]

3: InpRes1PA[3]

Option register;

port A input reset selection,

refer to reset part

OptInpRSel2

125

0000

0: InpRes2PA[0]

1: InpRes2PA[1]

2: InpRes2PA[2]

3: InpRes2PA[3]

Option register;

reset through port A inputs

selection,

refer to reset part

RegTestEM

127

----

accu

for EM test only;

write accu on port B

Test = 1

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