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EM78P451SWM Datasheet(PDF) 45 Page - ELAN Microelectronics Corp

Part # EM78P451SWM
Description  8-Bit Microcontroller with OTP ROM
PDF  54 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P451SWM Datasheet(HTML) 45 Page - ELAN Microelectronics Corp

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EM78P451S
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 06.01.2004
• 41
(This specification is subject to change without further notice)
Calibrate frequency of External RC oscillator (For reference only)
C ext
R ext
Fosc @5.0V,25℃
3.3K
3.4MHz
5.1K
2.2MHz
10K
1.3MHz
20pF
100K
144KHz
3.3K
1.2MHz
5.1K
935KHz
10K
420KHz
100pF
100K
45KHz
3.3K
550KHz
5.1K
360KHz
10K
190KHz
300pF
100K
28KHz
Internal C, external R Table (For reference only)
External R (Ohm)
Fosc @5.0V, 25℃ (Hz)
10K
12M
15K
7.7M
20K
5.7M
30K
3.65M
51K
2.24M
100K
1.14M
150K
749K
200K
559K
510K
214K
2M
56K
3.3M
32.8K
4.10 Code Option Register
WORD 0
12
11
10
9
8
7
6
5
4
3
2
1
0
MS
ENWD
T
CLKS
PTB
HLF
RCT
HLP
DEL1
DEL0
REN
N/A
N/A
N/A
Bit 12 (MS): Oscillator type selection.
0: RC type
1: XTAL type
Bit 11 (ENWDT): Watchdog Timer enabled.
0: Enable
1: Disable
Bit 10 (CLKS): Clocks of each instruction cycle.
0: Two clocks
1: Four clocks



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