MC9S08JM16CGT Freescale Semiconductor, MC9S08JM16CGT Datasheet - Page 317

• Manufacturer Part Number: MC9S08JM16CGT
• Description: MCU 8BIT 16K FLASH 48-QFN
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08JM16CGT

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, LIN, SCI, SPI, USB
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QFN Exposed Pad
• Processor Series: S08JM
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 37
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMOJM, DEMOJMSKT, DEMOFLEXISJMSD, DEMO9S08JM16
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Controller Family/series: HCS08
• No. Of I/o's: 37
• Ram Memory Size: 1KB
• Cpu Speed: 48MHz
• No. Of Timers: 2
• Digital Ic Case Style: QFN
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

When the USB module receives a USB token on an enabled endpoint, it interrogates the BDT. The USB
module reads the corresponding endpoint BD entry and determines if it owns the BD and corresponding
data buffer.
17.4.2.3
The buffer descriptors (BDs) are groups of registers that provide endpoint buffer control information for
the USB module and the MCU. The BDs have different meanings based on who is reading the BD in
memory.
The USB module uses the data stored in the BDs to determine:
The microcontroller uses the data stored in the BDs to determine:
Freescale Semiconductor
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Who owns the buffer in system memory
Data0 or Data1 PID
Release Own upon packet completion
Data toggle synchronization enable
How much data to be transmitted or received
Where the buffer resides in the buffer RAM.
Who owns the buffer in system memory
Data0 or Data1 PID
The received TOKEN PID
Buffer Descriptor Formats
USB RAM
Offset
0x1D
0x00
0x1E
0x1F
0x20
0xFF
Table 17-21. USB RAM Organization
MC9S08JM16 Series Data Sheet, Rev. 2
BDT
USB RAM available for endpoint buffers
USB RAM Description of Contents
RESERVED
RESERVED
Endpoint 0 IN
Endpoint 0, OUT
Endpoint 1
Endpoint 2
Endpoint 3
Endpoint 4
Endpoint 5, Buffer EVEN
Endpoint 5, Buffer ODD
Endpoint 6, Buffer EVEN
Endpoint 6, Buffer ODD
Universal Serial Bus Device Controller (S08USBV1)
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