EM78P447N
Table 13 RC Oscillator Frequencies
Cext |
| Rext |
| Average Fosc 5V,25°C |
| Average Fosc 3V,25°C |
|
| 3.3k |
| 4.32 MHz |
| 3.56 MHz |
20 pF |
| 5.1k |
| 2.83 MHz |
| 2.8 MHz |
| 10k |
| 1.62MHz |
| 1.57 MHz | |
|
|
|
| |||
|
| 100k |
| 184 KHz |
| 187 KHz |
|
| 3.3k |
| 1.39 MHz |
| 1.35 MHz |
100 pF |
| 5.1k |
| 950 KHz |
| 930 KHz |
| 10k |
| 500 KHz |
| 490 KHz | |
|
|
|
| |||
|
| 100k |
| 54KHz |
| 55 KHz |
|
| 3.3k |
| 580 KHz |
| 550 KHz |
300 pF |
| 5.1k |
| 390 KHz |
| 380 KHz |
| 10k |
| 200 KHz |
| 200 KHz | |
|
|
|
| |||
|
| 100k |
| 21 KHz |
| 21 KHz |
NOTE
1.Measured on DIP packages.
2.For design reference only.
4.8CODE Option Register
The EM78P447N has one CODE option word that is not a part of the normal program memory. The option bits cannot be accessed during normal program execution.
Code Option Register and Customer ID Register arrangement distribution:
Word 0 | Word 1 |
Bit12~Bit0
Bit12~Bit0
4.8.1 Code Option Register (Word 0)
Word 0
Bit12 | Bit11 | Bit10 | Bit9 | Bit8 | Bit7 | Bit6 |
- | - | EC | - | CLKS | ENWDTB | TYPE |
Bit5 Bit4
HLF OSC
Bit3 Bit2 Bit1 Bit0
HLP PR2 PR1 PR0
Bit 12 、11 : Not used.
Reserved.
The bit set to “1” all the time.
Bit 10 (EC): Error recovery Bit.
| 0: Enable |
| 1: Disable |
Bit 9: | Not used. |
| Reserved. |
| The bit set to “0” all the time. |
|
|
26 • | Product Specification (V1.1) 03.30.2005 |
(This specification is subject to change without further notice)
