MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 300

• Manufacturer Part Number: MC68HC908SR12CFA
• Description: MICROCONTROLLER 48 PIN
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 31
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1145673

Multi-Master IIC Interface (MMIIC)
Data Sheet
300
MMAD[7:1] — Multi-Master Address
MMEXTAD — Multi-Master Expanded Address
These seven bits represent the MMIIC interface’s own specific slave
address when in slave mode, and the calling address when in master
mode. Software must update MMAD[7:1] as the calling address while
entering master mode and restore its own slave address after master
mode is relinquished. This register is cleared as $A0 upon reset.
This bit is set to expand the address of the MMIIC in slave mode.
When set, the MMIIC will acknowledge the following addresses from
a calling master: $MMAD[7:1], 0000000, and 0001100.
Reset clears this bit.
For example, when MMADR is configured as:
The MMIIC module will respond to the calling address:
or the general calling address:
or the calling address:
Note that bit-0 of the 8-bit calling address is the MMRW bit from the
calling master.
1 = MMIIC responds to the following calling addresses:
0 = MMIIC responds to address $MMAD[7:1]
MMAD7 MMAD6 MMAD5 MMAD4 MMAD3 MMAD2 MMAD1 MMEXTAD
Bit 7
Bit 7
$MMAD[7:1], 0000000, and 0001100.
Multi-Master IIC Interface (MMIIC)
1
1
0
0
1
6
1
0
6
0
0
5
0
0
5
0
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
1
4
1
0
4
1
0
3
0
0
3
1
Freescale Semiconductor
1
2
1
0
2
0
Bit 1
Bit 1
0
0
0
0
1