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
0
0
0
0
0
22
1
0
0
0
0
352
0
0
0
0
1
24
1
0
0
0
1
384
0
0
0
1
0
28
1
0
0
1
0
448
0
0
0
1
1
34
1
0
0
1
1
544
0
0
1
0
0
44
1
0
1
0
0
704
0
0
1
0
1
48
1
0
1
0
1
768
0
0
1
1
0
56
1
0
1
1
0
896
0
0
1
1
1
68
1
0
1
1
1
1088
0
1
0
0
0
88
1
1
0
0
0
1408
0
1
0
0
1
96
1
1
0
0
1
1536
0
1
0
1
0
112
1
1
0
1
0
1792
0
1
0
1
1
136
1
1
0
1
1
2176
0
1
1
0
0
176
1
1
1
0
0
2816
0
1
1
0
1
192
1
1
1
0
1
3072
0
1
1
1
0
224
1
1
1
1
0
3584
0
1
1
1
1
272
1
1
1
1
1
4352
TPG
58
Содержание MC68HC05T16
Страница 2: ......
Страница 14: ...MOTOROLA vi MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 12 ...
Страница 16: ...MOTOROLA viii MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 14 ...
Страница 18: ...MOTOROLA x MC68HC05T16 THIS PAGE LEFT BLANK INTENTIONALLY TPG 16 ...
Страница 26: ...MOTOROLA 2 6 MC68HC05T16 PIN DESCRIPTIONS AND INPUT OUTPUT PORTS 2 THIS PAGE LEFT BLANK INTENTIONALLY TPG 24 ...
Страница 54: ...MOTOROLA 5 12 MC68HC05T16 TIMERS 5 THIS PAGE LEFT BLANK INTENTIONALLY TPG 52 ...
Страница 64: ...MOTOROLA 6 10 MC68HC05T16 M BUS SERIAL INTERFACE 6 THIS PAGE LEFT BLANK INTENTIONALLY TPG 62 ...
Страница 92: ...MOTOROLA 10 4 MC68HC05T16 ANALOG TO DIGITAL CONVERTER 10 THIS PAGE LEFT BLANK INTENTIONALLY TPG 90 ...
Страница 106: ...MOTOROLA 11 14 MC68HC05L1 CPU CORE AND INSTRUCTION SET 11 THIS PAGE LEFT BLANK INTENTIONALLY TPG 104 ...
Страница 110: ...MOTOROLA 12 4 MC68HC05T16 LOW POWER MODES 12 THIS PAGE LEFT BLANK INTENTIONALLY TPG 108 ...
Страница 116: ...MOTOROLA 13 6 MC68HC05T16 OPERATING MODES 13 THIS PAGE LEFT BLANK INTENTIONALLY TPG 114 ...
Страница 122: ...MOTOROLA 14 6 MC68HC05T16 ELECTRICAL SPECIFICATIONS 14 THIS PAGE LEFT BLANK INTENTIONALLY TPG 120 ...
Страница 124: ...MOTOROLA 15 2 MC68HC05T16 MECHANICAL SPECIFICATIONS 15 THIS PAGE LEFT BLANK INTENTIONALLY TPG 122 ...
Страница 127: ...2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 ...