Datasheet

Section 1 Overview
R01UH0309EJ0500 Rev. 5.00 Page 7 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Type
Module/
Function Description
Smart
Card/SIM
SCI supports Smart Card (SIM) interface
I
2
C bus interface
2 (IIC2)
• Four channels
• Continuous transmission/reception
• Start and stop conditions generated automatically in master
mode
• Selection of acknowledge output levels when receiving
• Automatic loading of acknowledge bit when transmitting
• Bit synchronization/wait function
Synchronous
serial
communication
unit (SSU)
• One channel
• Master mode or slave mode can be selected
• Standard mode or bidirectional mode can be selected
• Full-duplex communication capability
• Consecutive serial communication capability
High-
function
communi-
cations
USB function
module
• The protocol block conforming to USB2.0 and transceiver
process USB protocol automatically.
• Transfer speed: Supports full-speed (12 Mbps)
• Power mode: Self power mode or bus power mode can be
selected
I/O ports H8S/2456 Group, H8S/2456R Group:
• Input-only pins: 18
• Input/output pins: 94
• Pull-up resistor pins: 40
• Open-drain pins: 94
H8S/2454 Group:
• Input-only pins: 11
• Input/output pins: 79
• Pull-up resistor pins: 40
• Open-drain pins: 79