mc68hc05bs8 Freescale Semiconductor, Inc, mc68hc05bs8 Datasheet - Page 75
mc68hc05bs8
Manufacturer Part Number
mc68hc05bs8
Description
Mc68hc05 Family Of Low-cost Single-chip Microcontrollers.
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC05BS8.pdf
(128 pages)
- Current page: 75 of 128
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The software supported M-Bus interrupt related control and status bits are at the following
registers:
SIFC - Software M-Bus Interrupt Flag Clear
SIIC - Software M-Bus Enable
SIF - Software Supported M-Bus Interrupt Flag
MC68HC05BS8
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
MCR
MSR
–
–
–
Clear software supported M-Bus interrupt flag in MSR.
No effect.
If PC6 and PC7 satisfies the “Start” condition of the M-Bus protocol,
SIF in the MSR will be set and M-Bus interrupt will be generated.
PC6 and PC7 pins are configured for standard I/O operation.
Software M-Bus interrupt has occurred.
No software M-Bus interrupt has occurred.
Address bit 7
Address bit 7
$003B
$003C
M-BUS SERIAL INTERFACE
MEN
MCF
MAAS MBB
MIEN MSTA
bit 6
bit 6
bit 5
bit 5
bit 4
MTX
bit 4
MAL
TXAK
bit 3
bit 3
SIF
SRW
bit 2
bit 2
SIFC
bit 1
bit 1
MIF
RXAK 1000 0001
bit 0
bit 0
SIIC
0000 0000
on reset
on reset
State
State
TPG
8
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