MC908JB8ADWE Freescale Semiconductor, MC908JB8ADWE Datasheet - Page 142

• Manufacturer Part Number: MC908JB8ADWE
• Description: IC MCU 3MHZ 8K FLASH 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908JB8ADWE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: USB
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• 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: 28-SOIC (7.5mm Width)
• 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: 21
• Ram Memory Size: 256Byte
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• 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)
Technical Data
142
RXD2F — Endpoint 2 Data Receive Flag
TXD1F — Endpoint 1 Data Transmit Flag
RESUMF — Resume Flag
To enable the next data packet transmission, TX2E also must be set.
If the TXD2F bit is not cleared, a NAK handshake will be returned in
the next IN transaction.
Reset clears this bit. Writing to TXD2F has no effect.
This read-only bit is set after the USB module has received a data
packet and responded with an ACK handshake packet. Software
must clear this flag by writing a logic 1 to the RXD2FR bit after all of
the received data has been read. Software also must set the RX2E bit
to 1 to enable the next data packet reception. If the RXD2F bit is not
cleared, a NAK handshake will be returned in the next OUT
transaction.
Reset clears this bit. Writing to RXD2F has no effect.
This read-only bit is set after the data stored in the endpoint 1 transmit
buffer has been sent and an ACK handshake packet from the host is
received. Once the next set of data is ready in the transmit buffers,
software must clear this flag by writing a logic 1 to the TXD1FR bit. To
enable the next data packet transmission, TX1E also must be set. If
the TXD1F bit is not cleared, a NAK handshake will be returned in the
next IN transaction.
Reset clears this bit. Writing to TXD1F has no effect.
This read-only bit is set when USB bus activity is detected while the
SUSPND bit is set. Software must clear this flag by writing a logic 1 to
the RESUMFR bit. Reset clears this bit. Writing a logic 0 to RESUMF
has no effect.
1 = Transmit on endpoint 2 has occurred
0 = Transmit on endpoint 2 has not occurred
1 = Receive on endpoint 2 has occurred
0 = Receive on endpoint 2 has not occurred
1 = Transmit on endpoint 1has occurred
0 = Transmit on endpoint 1has not occurred
1 = USB bus activity has been detected
0 = No USB bus activity has been detected
Universal Serial Bus Module (USB)
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor