EM6621 Datasheet, PDF (54/69 Pages) EM Microelectronic - MARIN SA – Ultra Low Power Microcontroller with 4x20 LCD Driver

EM6621
16. 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, reset from pin RESET, etc. do not change the
options register value.
Register
Name
Add Add
Hex Dec.
OPTDebIntPA _{75 117}
OPT[3:0]
OPTIntEdgPA _{76 118}
OPT[7:4]
OPTNoPullPA _{77 119}
OPT[11:8]
OPTNoPdPB
OPT[15:12]
78 120
OPTNchOpDPB _{79 121}
OPT[19:16]
OPTNchOpDPS _{7A 122}
OPT[23:20]
OPTFSelPB
OPT[31:28]
7B 123
Reset
Value
b’3210
0000
0000
0000
0000
0000
0000
0000
OPTInpRSel1 ^{7C 124}
0000
OPTInpRSel2 ^{7D 125}
0000
OPTNoPdPS
OPT[35:32]
7E 126
RegTestEM
7F 127
0000
----
Read Bits
Write Bits
Read / Write Bits
0: NoDebIntPA[0]
1: NoDebIntPA[1]
2: NoDebIntPA[2]
3: NoDebIntPA[3]
0: IntEdgPA[0]
1: IntEdgPA[1]
2: IntEdgPA[2]
3: IntEdgPA[3]
0: NoPullPA[0]
1: NoPullPA[1]
2: NoPullPA[2]
3: NoPullPA[3]
0: NoPdPB[0]
1: NoPdPB[1]
2: NoPdPB[2]
3: NoPdPB[3]
0: NchOpDPB[0]
1: NchOpDPB[1]
2: NchOpDPB[2]
3: NchOpDPB[3]
0: NchOpDPS[0]
1: NchOpDPS[1]
2: NchOpDPS[2]
3: NchOpDPS[3]
0: PB1HzOut
1: PB1kHzOut
2: PB32kHzOut
3: InpResSleep
0: InpRes1PA[0]
1: InpRes1PA[1]
2: InpRes1PA[2]
3: InpRes1PA[3]
0: InpRes2PA[0]
1: InpRes2PA[1]
2: InpRes2PA[2]
3: InpRes2PA[3]
0: NoPdPS[0]
1: NoPdPS[1]
2: NoPdPS[2]
3: NoPdPS[3]
----
----
Remarks
Debouncer on port A
for interrupt gen.
Default: debouncer on
Interrupt edge select on
port A.
Default: pos. edge
Pull-down selection on
port A
Default: pull-down
Pull-down selection on
port B
Default: pull-down
Nch. open drain
output on port B
Default: CMOS output
Nch. open drain
output on port serial
Default: CMOS output
Frequency output on
port B, reset from sleep
mode with port A
Reset through port A
inputs selection.
Refer to reset part
Reset through port A
inputs selection.
Refer to reset part
No Pull-down on port SP
Default: pull-down
for EM test only;
© EM Microelectronic-Marin SA, 03/99, Rev. B/
Copyright  2002, EM Microelectronic-Marin SA
54
03/02 REV. D/444
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