SK-FR80-120PMC-USB Fujitsu, SK-FR80-120PMC-USB Datasheet - Page 56

• Manufacturer Part Number: SK-FR80-120PMC-USB
• Description: BOARD, EVAL, FOR MB91660 SERIES
• Manufacturer: Fujitsu
• Type: Evaluation Boardr

Specifications of SK-FR80-120PMC-USB

• Kit Features: External FRAM Memory MB85RS256, USB A & USB A Connectors, USB To Serial Converter
• Mcu Supported Families: MB91660
• Silicon Manufacturer: Fujitsu
• Core Architecture: FR80
• Kit Contents: Board, USB A To Mini-B Cable
• Features: USB Connector, 7-segment LED, Humidity Sensor
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.5
4.6
transfer rate when connected to the host by using a pull-up resistor.
line that is pulled up, and selects its data transfer rate accordingly.
a maximum of 3 meters for Low Speed rates.
Additionally, cable lengths are standardized to a maximum of 5 meters for Full Speed rates, and
USB transfer rates are standardized as shown below.
The USB standard requires that USB devices allow for the automatic detection of their data
- A Full Speed device pulls up the D+ signal line with a 1.5 kΩ (R2) resistor.
- A Full Speed device pulls up the D- signal line with a 1.5 kΩ (R2) resistor.
(Transfer rate types will be discussed later.)
After the USB device is connected, the host detects whether it is the D+ signal line or D- signal
USB 1.0/1.1
USB 2.0
Transfer rate
Transfer rate detection
Figure 4.6-1 Differences in connection based on transfer rates
Low Speed
1.5 Mbps
1.5 Mbps
The MB91F662 supports only Full Speed.
Table 4.5-1. USB Transfer rates
55
Full Speed
12 Mbps
12 Mbps
High Speed
-
480 Mbps