MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 194

• 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: -

DDC12AB Interface
15.3 Features
15.4 I/O Pins
Data Sheet
194
Generic Pin Names:
DDC12AB
SDA
SCL
This DDC12AB module uses the DDCSCL clock line and the DDCSDA
data line to communicate with external DDC host or IIC interface. These
two pins are shared with port pins PTD3 and PTD2 respectively. The
outputs of DDCSDA and DDCSCL pins are open-drain type — no
clamping diode is connected between the pin and internal V
maximum data rate typically is 100k-bps. The maximum communication
length and the number of devices that can be connected are limited by
a maximum bus capacitance of 400pF.
The DDC12AB module uses two I/O pins, shared with standard port I/O
pins. The full name of the DDC12AB I/O pins are listed in
The generic pin name appear in the text that follows.
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Table 15-1. Pin Name Conventions
DDC1 hardware
Compatibility with multi-master IIC bus standard
Software controllable acknowledge bit generation
Interrupt driven byte by byte data transfer
Calling address identification interrupt
Auto detection of R/W bit and switching of transmit or receive
mode
Detection of START, repeated START, and STOP signals
Auto generation of START and STOP condition in master mode
Arbitration loss detection and No-ACK awareness in master mode
8 selectable baud rate master clocks
Automatic recognition of the received acknowledge bit
Full MCU Pin Names:
PTD2/DDCSDA
PTD3/DDCSCL
DDC12AB Interface
DDCSCLE bit in PDCR ($0049)
DDCDATE bit in PDCR ($0049)
DDC Function By:
Pin Selected for
MC68HC908BD48
Freescale Semiconductor
Table
DD
. The
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15-1.
Rev. 2.1