EM6520 EM Microelectronic, EM6520 Datasheet - Page 20

• Manufacturer Part Number: EM6520
• Description: MFP version of EM6620 Ultra Low Power Microcontroller 4x8 LCD Driver
• Manufacturer: EM Microelectronic

6.6 Port B registers
Table 6.6.1 Register RegPBData
Table 6.6.2 Register RegPBCntl
Table 6.6.3 Register RegPB0Comp
Table 6.6.4 register OPTFSelPB
Table 6.6.5 option register OPTNoPdPB
Table 6.6.6 option register OPTNchOpDPB
EM Microelectronic-Marin SA CH-2074 Marin, Switzerland, Tel. [phone], Fax. [phone]
20
Bit
3
2
1
0
Bit
Bit
Bit
Bit
Bit
3
2
1
0
3
2
1
0
3
2
1
0
3
2
1
0
3
2
1
0
R* : Direct read on port B terminal (not the internal register read).
Default "0" is: PortB in input mode
Default "0" is: Power supply voltage level detection
Default "0" is: No frequency output, Port A can reset the EM6520.
Default "0" is: Pull-down on
Default "0" is: CMOS on PB[3..0]
PB0CompEnable
PB0CompResult
PB0CompSelect
NchOpDPB[3]
NchOpDPB[2]
NchOpDPB[1]
NchOpDPB[0]
PB32kHzOut
NoInputRes
PBIOCntl[3]
PBIOCntl[2]
PBIOCntl[1]
PBIOCntl[0]
PB2kHzOut
NoPdPB[3]
NoPdPB[2]
NoPdPB[1]
NoPdPB[0]
PB1HzOut
PBData[3]
PBData[2]
PBData[1]
PBData[0]
Name
Name
Name
Name
Name
Name
--
power on
power on
power on
Reset
Reset
value
value
value
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
-
--
0
0
0
R* /W
R* /W
R* /W
R* /W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
--
Comparator measurements enable
Dynamic input Comparator function
No Input Reset From Port A
Nch. Open Drain on PB[3]
Nch. Open Drain on PB[2]
Nch. Open Drain on PB[1]
Nch. Open Drain on PB[0]
Ck[12] output on PB[1]
Ck[16] output on PB[0]
PB[3] input and output
PB[2] input and output
PB[1] input and output
PB[0] input and output
No pull-down on PB[3]
No pull-down on PB[2]
No pull-down on PB[1]
No pull-down on PB[0]
Comparator result flag
Ck[1] output on PB[2]
© EM Microelectonic-Marin SA , 12/98 Rev. A/246
I/O control for PB[3]
I/O control for PB[2]
I/O control for PB[1]
I/O control for PB[0]
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Description
Description
Description
Description
Description
Description
EM6520