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HD6433044 Datasheet, PDF (18/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer | |||
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Table 1-1 Features (cont)
Feature
Description
Refresh
controller
DRAM refresh
⢠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
(DMAC)
Short address mode
⢠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
channels 0 to 3, transmit-data-empty and receive-data-full interrupts from SCI
channel 0, or external requests
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
channels 0 to 3, external requests, or auto-request
16-bit integrated
timer unit (ITU)
⢠Five 16-bit timer channels, capable of processing up to 12 pulse outputs or 10
pulse inputs
⢠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
(channels 0 to 3)
Programmable
timing pattern
controller (TPC)
⢠Maximum 16-bit pulse output, using ITU as time base
⢠Up to four 4-bit pulse output groups (or one 16-bit group, or two 8-bit groups)
⢠Non-overlap mode available
⢠Output data can be transferred by DMAC
Watchdog
timer (WDT),
1 channel
⢠Reset signal can be generated by overflow
⢠Reset signal can be output externally
⢠Usable as an interval timer
Serial
communication
interface (SCI),
2 channels
⢠Selection of asynchronous or synchronous mode
⢠Full duplex: can transmit and receive simultaneously
⢠On-chip baud-rate generator
⢠Smart card interface functions added (SCI0 only)
3
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