![](http://datasheet.mmic.net.cn/330000/R8820LV_datasheet_16447754/R8820LV_3.png)
R DC
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
3
14. DMA Unit
---------------------------------------------------------------------------53
14.1
DMA Operation
----------------------------------------------------------------53
14.2
External Request
---------------------------------------------------------------59
14.3 Serial Port / DMA Transfer
------------------------------------------------61
15. Timer Control Unit
----------------------------------------------------------------62
15.1
Timer/Counter Unit Output Mode
------------------------------------------66
16. Watchdog Timer
-------------------------------------------------------------------68
17. Asynchronous Serial Port
---------------------------------------------------------70
17.1
Serial Port Flow Control
--------------------------------------------------70
17.1.1 DCE/DTE Protocol
------------------------------------------------70
17.1.2 CTS/RTR Protocol
--------------------------------------------------71
17.2 DMA Transfer to/form a serial port function
-------------------------71
17.3 The Asynchronous Modes description
----------------------------------72
18. PIO Unit
-----------------------------------------------------------------------------77
18.1
PIO Multi-Function Pin list Table
-------------------------------------------77
19. PSRAM Control Unit
--------------------------------------------------------------80
20. Instruction Set Opcodes and Clock Cycle
-------------------------------------81
20.1
R8820LV Execution Timings
------------------------------------------------85
21. DC Characteristics
-----------------------------------------------------------------86
22. AC Characteristics
-----------------------------------------------------------------88
23. Package Information
--------------------------------------------------------------97