3
Item
Specifications
EXDMA controller
(EXDMAC)
•
Four DMA channels exclusively for external bus use
•
Selection of dual address mode or single address mode
•
Transfer possible in burst transfer mode, block transfer mode, etc.
•
Repeat area setting function
•
Can operate in parallel with internal bus operations by internal bus master
Data transfer
controller (DTC)
•
Activated by internal interrupt or software
•
Multiple transfers or multiple types of transfer possible for one activation
source
•
Transfer possible in repeat mode, block transfer mode, etc.
•
Request can be sent to CPU for interrupt that activated DTC
16-bit timer-pulse
unit (TPU)
•
Six-channel 16-bit timer on-chip
•
Pulse I/O processing capability for up to 16 pins
•
Automatic 2-phase encoder count capability
Programmable
pulse generator
(PPG)
•
Maximum 16-bit pulse output possible with TPU as time base
•
Output trigger selectable in 4-bit groups
•
Non-overlap margin can be set
•
Direct output or inverse output setting possible
8-bit timer,
2 channels
•
8-bit up-counter (external event count capability)
•
Two time constant registers
•
Two-channel connection possible
Watchdog timer
•
Watchdog timer or interval timer selectable
Serial communi-
cation interface
(SCI), 3 channels
•
Asynchronous mode or synchronous mode selectable
•
Multiprocessor communication function
•
Smart card interface function
•
One channel (SCI0) functions as SCI with IrDA
Conforms to IrDA specification ver. 1.0
IrDA format encoding/decoding of TxD and RxD
Содержание H8S/2670
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