em78p5842 ELAN Microelectronics Corp, em78p5842 Datasheet - Page 30
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em78p5842
Manufacturer Part Number
em78p5842
Description
8-bit Micro-controller
Manufacturer
ELAN Microelectronics Corp
Datasheet
1.EM78P5842.pdf
(45 pages)
- Current page: 30 of 45
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VII.9_1 Code Option
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
EM785840 CODE Option Register
12 11 10
1
1
Bit 3(MER) : Memory error recover function
Bit 4 (IRC2S): Internal RC oscillating frequency (for system CLK) select.
Bit5~Bit6 (OSCM0~OSCM1): EM785840 oscillating mode select.
Bit 7 (P70S): PORT70 function select bit:
Bit 8 (P71S): PORT71 function select bit:
0 Î disable memory error recover function
1 Î enable memory error recovery function
If user enable memory error recovery function, MCU will improve effect from environment noise.
0 Î 2M Hz
1 Î 4M Hz
1
0 Î /RESET pin selected..
1 Î General purpose INPUT port “PORT71” selected
OSCM1
9
1 P71S P70S OSCM1 OSCM0 IRC2S
OSCM1
0
0
1
1
0
0
1
8
OSCM0
7
X
X
0
1
OSCM0
6
X
0
1
P70S
5
X
X
1
0
4
Oscillating mode
PLLC output, please cascade capacitor to AVSS
28
General Purpose IO, PLL function will disable
Crystal mode
OSC input, please cascade resister to AVDD
ERIC mode
IRC mode
MER
3
General Purpose IO
PORT70 status
2
1
1
1
EM785840/5841/5842
8-bit Micro-controller
0
1
2004/11/10 V1.2
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