MC908AP32CFAE Freescale Semiconductor, MC908AP32CFAE Datasheet - Page 248
MC908AP32CFAE
Manufacturer Part Number
MC908AP32CFAE
Description
IC MCU 32K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Specifications of MC908AP32CFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Controller Family/series
HC08
No. Of I/o's
32
Ram Memory Size
2KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
I2C, SCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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MC908AP32CFAE
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Quantity:
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Part Number:
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Manufacturer:
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Multi-Master IIC Interface (MMIIC)
14.9 SMBus Protocol Implementation
246
MASTER MODE
START
SLAVE MODE
START
OPERATION:
Prepare for Master mode
ACTION:
1. Load slave address to MMADR
2. Clear MMRW
3. Load command to MMDTR
4. Set MMAST
OPERATION:
Prepare for Slave mode
ACTION:
1. Load slave address to MMADR
2. Clear MMTXAK
3. Clear MMAST
Shaded data packets indicate transmissions by the MCU
Address
Address
OPERATION:
Slave address match and
FLAGS:
MMRXIF set
MMATCH set
MMSRW depends on 8th
ACTION:
1. Check MMSRW
2. Read Slave address
check for data direction
bit of calling address byte
OPERATION:
Prepare for repeated START
FLAGS:
MMTXIF set
MMRXAK clear
ACTION:
1. Set MMRW
2. Set REPSEN
3. Clear MMTXAK
4. Load dummy ($FF) to MMDTR
0
0
ACK
ACK
Command
Command
OPERATION:
Read and decode received command
FLAGS:
MMRXIF set
MMATCH clear
ACTION:
Load Data1 to MMDTR
Figure 14-20. SMBus Protocol Implementation
ACK
ACK
MC68HC908AP Family Data Sheet, Rev. 4
OPERATION:
Slave address match and
FLAGS:
MMRXIF set
MMATCH set
MMSRW depends on 8th
ACTION:
Check MMSRW
get ready to transmit data
bit of calling address byte
START
START
OPERATION:
Get ready to receive data
FLAGS:
MMTXIF set
MMRXAK clear
ACTION:
Load dummy ($FF) to MMDTR
Address
Address
1
1
ACK
ACK
OPERATION:
Transmit data
FLAGS:
MMTXIF set
ACTION:
Load Data2 to MMDTR
RX Data1
TX Data1
OPERATION:
Read received data
FLAGS:
MMRXIF set
ACTION:
Read Data1 from MMDRR
OPERATION:
Transmit data
FLAGS:
MMTXIF set
MMRXAK clear
ACTION:
Load Data3 to MMDTR
OPERATION:
Read received data and prepare for STOP
FLAGS:
MMRXIF set
ACTION:
1. Set MMTXAK
2. Read Data(N-1) from MMDRR
3. Clear MMAST
ACK
ACK
OPERATION:
Last data is going to be sent
FLAGS:
MMTXIF set
MMRXAK clear
ACTION:
Load dummy ($FF) to MMDTR
ACK
ACK
Freescale Semiconductor
OPERATION:
Last data sent
FLAGS:
MMTXIF set
MMRXAK set
ACTION:
Load dummy ($FF) to MMDTR
RX DataN
TX DataN
OPERATION:
Generate STOP
FLAGS:
MMRXIF set
ACTION:
Read DataN from MMDRR
NAK
NAK
STOP
STOP
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