MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 207

• Manufacturer Part Number: MC68HC908BD48IFB
• Description: IC MCU 48K FLASH 6MHZ USB 44PQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908BD48IFB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 6MHz
• Connectivity: I²C, USB
• Peripherals: POR, PWM
• Number Of I /o: 32
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

MC68HC908BD48
Freescale Semiconductor
Figure 15-8. Data Transfer Sequences for Master/Slave Transmit/Receive Modes
(a) Master Transmit Mode
(b) Master Receive Mode
(c) Slave Transmit Mode
(d) Slave Receive Mode
KEY: shaded data packets indicate a transmit by the MCU’s DDC module
TXBE=0
MRW=0
MAST=1
Data1 → DDTR
RXBF=0
MRW=1
MAST=1
TXBE=0
(dummy data → DDTR)
TXBE=1
RXBF=0
TXBE=0
RXBF=0
START
START
START
START
—
Rev. 2.1
Address
Address
Address
Address
RXIF=1
RXBF=1
MATCH=1
SRW=0
TXBE=1
TXIF=1
Data2 → DDTR
RXIF=1
RXBF=1
MATCH=1
SRW=1
Data1 → DDTR
0
1
1
0
ACK
ACK
ACK
ACK
DDC12AB Interface
RX Data1
RX Data1
TX Data1
TX Data1
TXBE=1
TXIF=1
Data2 → DDTR
TXBE=1
TXIF=1
Data3 → DDTR
Data1 → DDRR
RXIF=1
RXBF=1
Data1 → DDRR
RXIF=1
RXBF=1
ACK
ACK
ACK
ACK
RX DataN
RX DataN
TX DataN
TX DataN
DataN+2 → DDTR
DataN → DDRR
DataN+2 → DDTR
DataN → DDRR
RXBF=1
RXBF=1
TXBE=1
TXBE=1
RXIF=1
RXIF=1
TXIF=1
TXIF=1
NAK
NAK
NAK
NAK
DDC12AB Interface
NAKIF=1
MAST=0
TXBE=0
NAKIF=1
MAST=0
NAKIF=1
TXBE=0
STOP
STOP
STOP
STOP
Data Sheet
207