Datasheet

Section 16 USB Function Module (USB)
Page 950 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Figure 16.1 shows the block diagram of the USB.
Peripheral bus
Interrupt requests
Status/control
registers
FIFO
Protocol
processing
block
Transceiver
USB function module
D+
D-
Clock for USB
(48 MHz)
Figure 16.1 Block Diagram of USB
16.2 Input/Output Pins
Table 16.1 shows the USB pin configuration.
Table 16.1 Pin Configuration
Pin Name I/O Function
VBUS Input USB cable connection monitor pin
USD+ I/O USB data I/O pin
USD- I/O USB data I/O pin
DrVcc Input Power supply pin for USB on-chip transceiver
DrVss Input Ground pin for USB on-chip transceiver
PUPD+ Output USD+ signal pull-up control pin