MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 248

• 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: -

Input/Output (I/O) Ports
17.7.2 Data Direction Register E
Data Sheet
248
NOTE:
Address:
SOG/TCH0 — SOG Output or TCH0 Input
Data direction register E (DDRE) determines whether each port E pin is
an input or an output. Writing a logic 1 to a DDRE bit enables the output
buffer for the corresponding port E pin; a logic 0 disables the output
buffer.
DDRE2–DDRE0 — Data Direction Register E Bits
Avoid glitches on port E pins by writing to the port E data register before
changing data direction register E bits from 0 to 1.
Figure 17-18
Reset:
Read:
Write:
The PTE0/SOG/TCH0 pin is the SOG input for the sync processor or
the input capture of the TIM channel 0. See
These read/write bits control port E data direction. Reset clears
DDRE2–DDRE0, configuring all port E pins as inputs.
1 = Corresponding port E pin configured as output
0 = Corresponding port E pin configured as input
$000C
Bit 7
Figure 17-17. Data Direction Register E (DDRE)
0
0
shows the port E I/O logic.
Input/Output (I/O) Ports
= Unimplemented
6
0
0
5
0
0
4
0
0
3
0
0
17.7.3 Port E
MC68HC908BD48
DDRE2
Freescale Semiconductor
2
0
DDRE1
1
0
Options.
—
Rev. 2.1
DDRE0
Bit 0
0