Hitachi SH7751 Hardware Manual page 47

Table 1.1 SH7751 Series Features (cont)
Item
Direct memory
access controller
(DMAC)
Timer unit (TMU)
Realtime clock
(RTC)
Serial
communication
interface
(SCI, SCIF)
Rev. 3.0, 04/02, page 8 of 1064
Features


Physical address DMA controller

SH7751: 4-channel

SH7751R: 8-channel


Transfer data size: 8, 16, 32, or 64 bits, or 32 bytes


Address modes:

1-bus-cycle single address mode

2-bus-cycle dual address mode


Transfer requests: External, on-chip peripheral module, or auto-requests


Bus modes: Cycle-steal or burst mode


Supports on-demand data transfer mode (external bus 32 bit)


5-channel auto-reload 32-bit timer
Input-capture function on one channel


Selection from 7 counter input clocks in 3 of 5 channels and from 5
counter input clocks on remaining 2 of 5 channels


On-chip clock and calendar functions


Built-in 32 kHz crystal oscillator with maximum 1/256 second resolution
(cycle interrupts)


Two full-duplex communication channels (SCI, SCIF)


Channel 1 (SCI):

Choice of asynchronous mode or synchronous mode

Supports smart card interface


Channel 2 (SCIF):

Supports asynchronous mode

Separate 16-byte FIFOs provided for transmitter and receiver