Datasheet
Section 1 Overview 
Page 6 of 1384    R01UH0310EJ0500 Rev. 5.00 
 Sep 25, 2012 
H8S/2426, H8S/2426R, H8S/2424 Group
Type 
Module/ 
Function Description 
Timer 16-bit timer 
pulse unit 
(TPU) 
•  16-bit timer × 12 channels (general pulse timer unit) 
•  Eight counter input clocks can be selected for each channel 
•  Maximum 16-pulse input/output (when external expanded mode is 
set) 
•  Maximum 32-pulse input/output (when single-chip mode is set) 
•  Counter clear operation, simultaneous write to multiple timer 
counters (TCNT), simultaneous clearing by compare match and 
input capture, register simultaneous input/output possible by 
counter synchronous operation, and maximum of 15-phase PWM 
output by combination with synchronous operation 
•  Buffer operation, phase counting mode (two-phase encoder input), 
and cascaded operation settable for channels 
•  Input capture function 
•  Output compare function (waveform output at compare match) 
8-bit timer 
(TMR) 
•  8-bit timer × 2 channels (operation as a 16-bit timer is also possible) 
•  Selection of seven clock sources: Six internal clock signals or an 
external clock input 
•  Pulse output with an arbitrary duty cycle or PWM output 
Programma
ble pulse 
generator 
(PPG) 
•  16-bit pulse output 
•  Pulse outputs are divided into four groups 
Non-overlap mode is available 
Inverted output can be specified 
•  Can operate together with the data transfer controller (DTC) and 
DMA controller (DMAC) 
Watchdog 
timer 
Watchdog 
timer (WDT) 
•  8-bit timer × 1 channel (eight counter input clocks can be selected) 
•  Switchable between watchdog timer mode and interval timer mode 
Serial 
interface 
•  Five channels (asynchronous or clocked synchronous serial 
communication mode) 
•  Full-duplex communication capability 
•  Choice of any bit rate and choice of LSB-first or MSB-first 
•  IrDA data transmission/reception based on the IrDA standard 
version 1.0 
Smart 
Card/SIM 
Serial 
communicati
on interface 
(SCI) 
SCI supports Smart Card (SIM) interface 










