參數(shù)資料
型號(hào): MC68HC05E5DW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 117/140頁
文件大?。?/td> 847K
代理商: MC68HC05E5DW
NON-DISCLOSURE
AGREEMENT
REQUIRED
Motorola Bus (M Bus) Interface
General Release Specification
MC68HC05E5 Rev. 1.0
78
Motorola Bus (M Bus) Interface
MOTOROLA
11.6.2 M-Bus Frequency Divider Register
Bit 0–Bit 4
These bits are used for clock rate selection. The serial bit clock
frequency is equal to the CPU clock divided by the divider shown in
Table 11-1. This register is cleared upon reset.
For a 4-MHz external crystal operation (2-MHz internal operating
frequency), the serial bit clock frequency of the M-bus ranges from
460 Hz to 90,909 Hz.
Address:
$0019
Bit 7
654321
Bit 0
Read:
FD4
FD3
FD2
FD1
FD0
Write:
Reset:
00000
= Unimplemented
Figure 11-5. M-Bus Frequency Divider Register (MFDR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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