Hitachi H8/3048 Hardware Manual page 18

Table 1-1 Features (cont)
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Feature Description
Refresh DRAM refresh
controller • Directly connectable to 16-bit-wide DRAM
• CAS-before-RAS refresh
• Self-refresh mode selectable
Pseudo-static RAM refresh
• Self-refresh mode selectable
Usable as an interval timer
DMA controller Short address mode
(DMAC) • Maximum four channels available
• Selection of I/O mode, idle mode, or repeat mode
• Can be activated by compare match/input capture A interrupts from ITU
Full address mode
• Maximum two channels available
• Selection of normal mode or block transfer mode
• Can be activated by compare match/input capture A interrupts from ITU
16-bit integrated • Five 16-bit timer channels, capable of processing up to 12 pulse outputs or 10
timer unit (ITU)
• 16-bit timer counter (channels 0 to 4)
• Two multiplexed output compare/input capture pins (channels 0 to 4)
• Operation can be synchronized (channels 0 to 4)
• PWM mode available (channels 0 to 4)
• Phase counting mode available (channel 2)
• Buffering available (channels 3 and 4)
• Reset-synchronized PWM mode available (channels 3 and 4)
• Complementary PWM mode available (channels 3 and 4)
• DMAC can be activated by compare match/input capture A interrupts
Programmable • Maximum 16-bit pulse output, using ITU as time base
timing pattern • Up to four 4-bit pulse output groups (or one 16-bit group, or two 8-bit groups)
controller (TPC) • Non-overlap mode available
• Output data can be transferred by DMAC
Watchdog • Reset signal can be generated by overflow
timer (WDT), • Reset signal can be output externally
1 channel • Usable as an interval timer
Serial • Selection of asynchronous or synchronous mode
communication • Full duplex: can transmit and receive simultaneously
interface (SCI), • On-chip baud-rate generator
2 channels • Smart card interface functions added (SCI0 only)
channels 0 to 3, transmit-data-empty and receive-data-full interrupts from SCI
channel 0, or external requests
channels 0 to 3, external requests, or auto-request
pulse inputs
(channels 0 to 3)
3