MC908JB8FBE Freescale Semiconductor, MC908JB8FBE Datasheet - Page 134

• Manufacturer Part Number: MC908JB8FBE
• Description: IC MCU 8K FLASH 3MHZ 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908JB8FBE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: USB
• Peripherals: LVD, POR, PWM
• Number Of I /o: 37
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-QFP
• Processor Series: HC08JB
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: USB
• Maximum Clock Frequency: 3 MHz
• Number Of Programmable I/os: 37
• Number Of Timers: 2
• Operating Supply Voltage: 5.25 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68EML08GZE, KITUSBSPIDGLEVME, KITUSBSPIEVME, KIT33810EKEVME
• Minimum Operating Temperature: 0 C
• Controller Family/series: HC08
• No. Of I/o's: 37
• Ram Memory Size: 256Byte
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• Package: 44PQFP
• Family Name: HC08
• Maximum Speed: 3 MHz
• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 3MHz
• Total Internal Ram Size: 256Byte
• # I/os (max): 37
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4V
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Universal Serial Bus Module (USB)
9.7.2.1 Output Driver Characteristics
9.7.2.2 Low Speed (1.5 Mbps) Driver Characteristics
Technical Data
134
The USB transceiver uses a differential output driver to drive the USB
data signal onto the USB cable. The static output swing of the driver in
its low state is below the V
its high state is above the V
output swings between the differential high and low state are well
balanced to minimize signal skew. Slew rate control on the driver is used
to minimize the radiated noise and cross talk. The driver’s outputs
support 3-state operation to achieve bidirectional half duplex operation.
The driver can tolerate a voltage on the signal pins of –1.0V to 5.5V with
respect to local ground reference without damage.
The rise and fall time of the signals on this cable are greater than 75ns
and less than 300ns. The edges are matched to within
RFI emissions and signal skew.
USB data transmission is done with differential signals. A differential
input receiver is used to accept the USB data signal. A differential 1 on
the bus is represented by D+ being at least 200mV more positive than
D– as seen at the receiver, and a differential 0 is represented by D–
being at least 200mV more positive than D+ as seen at the receiver. The
signal cross over point must be between 1.3V and 2.0V.
V
V
SE
SE
(max)
(min.)
V
SS
Universal Serial Bus Module (USB)
Figure 9-11. Receiver Characteristics
(1.5 Mb/s)
ONE BIT
TIME
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
OL
OH
of 0.3V with a 1.5kΩ load to 3.6V and in
of 2.8V with a 15kΩ load to ground. The
REFLECTIONS AND RINGING
LEVELS WITH MINIMAL
PASS OUTPUT SPEC
SIGNAL PINS
Freescale Semiconductor
±
20% to minimize