參數(shù)資料
型號: MC68HC705T16B
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封裝: PLASTIC, SDIP-56
文件頁數(shù): 86/128頁
文件大?。?/td> 734K
代理商: MC68HC705T16B
MOTOROLA
6-6
MC68HC05T16
M-BUS SERIAL INTERFACE
6
6.3.1
M-Bus Address Register (MADR)
ADR1-ADR7 are the slave address bits of the M-Bus module.
6.3.2
M-Bus Clock Register (MCKR)
MBC0-MBC4 are used for clock rate selection. The serial bit clock frequency is equal to the CPU
clock divided by the divider shown in Table 6-1.
For a 4.2MHz external crystal operation (2.1MHz internal operating frequency), the serial bit clock
frequency of M-Bus ranges from 483Hz to 95,455Hz.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$37
ADR7
ADR6
ADR5
ADR4
ADR3
ADR2
ADR1
0000 0000
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$38
MBC4
MBC3
MBC2
MBC1
MBC0
0000 0000
Table 6-1 M-Bus Prescaler
MBC4
MBC3
MBC2
MBC1
MBC0
DIVIDER
MBC4
MBC3
MBC2
MBC1
MBC0
DIVIDER
00000
22
10000
352
00001
24
10001
384
00010
28
10010
448
00011
34
10011
544
00100
44
10100
704
00101
48
10101
768
00110
56
10110
896
00111
68
10111
1088
01000
88
11000
1408
01001
96
11001
1536
0
1
0
1
0
112
1
0
1
0
1792
0
1
0
1
136
1
0
1
2176
0
1
0
176
1
0
2816
0
1
0
1
192
1
0
1
3072
0
1
0
224
1
0
3584
0
1
272
1
4352
TPG
58
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