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EM6821 Datasheet(PDF) 50 Page - EM Microelectronic - MARIN SA

Part # EM6821
Description  Ultra Low Power uController with 4x20 LCD Driver
PDF  68 Pages
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM6821 Datasheet(HTML) 50 Page - EM Microelectronic - MARIN SA

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EM6821
Copyright
© 2005, EM Microelectronic-Marin SA
50
www.emmicroelectronic.com
15. Peripheral Memory Map
Reset values are valid after power up or after every system reset.
Register
Name
Add
Hex
Add
Dec.
Reset
Value
Read Bits
Write Bits
Remarks
b'3210
Read / Write Bits
Ram1_0
00
0
xxxx
0: Data0
1: Data1
2: Data2
3: Data3
Normal addressable
Ram 64x4 bit
...
...
...
...
...
Ram1_63
3F
63
xxxx
0: Data0
1: Data1
2: Data2
3: Data3
Normal addressable
Ram 64x4 bit
Ram2_0
40
64
xxxx
0: Data0
1: Data1
2: Data2
3: Data3
16 nibbles addressable over
index register
on add 'H70
...
...
...
...
Ram2_3
43
67
xxxx
0: Data0
1: Data1
2: Data2
3: Data3
16 nibbles addressable over
index register
on add 'H70
LCD_1
44
68
xxxx
Connections are user definable.
See LCD section
16 nibbles addressable over
index register on add 'H70
LCD_2
45
69
xxxx
Connections are user definable.
See LCD section
16 nibbles addressable over
index register on add 'H70
LCD_3
46
70
xxxx
Connections are user definable.
See LCD section
The 8 lower nibbles are
addressable over the index
register on add 'H70.
The 8 higher Nibbles are not
used and not implemented
---
47
71
Reserved, not implemented
...
...
...
...
---
4F
79
Reserved, not implemented
RegPA
50
80
xxxx
0: PAData[0]
1: PAData[1]
2: PAData[2]
3: PAData[3]
----
Read port A directly
RegPBCntl
51
81
0000
0: PBIOCntl[0]
1: PBIOCntl[1]
2: PBIOCntl[2]
3: PBIOCntl[3]
Port B control
Default: input mode



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