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Datasheet: R1120 (RDC Semiconductor)

Max 80MHz Internal MCU Core Operating Frequency - 3.3V Operating Voltage

 

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RDC
RDC
RDC
RDC
RISC DSP Controller
R1120

RDC Semiconductor Co.
Rev 1.2
Subject to change without notice
1







R1120
16-Bit RISC Microcontroller User's Manual
RDC
RDC
RDC
RDC
RISC DSP Controller
RDC Semiconductor Co., Ltd
http:\\www.rdc.com.tw
Tel. 886-3-666-2866
Fax 886-3-563-1498



RDC
RDC
RDC
RDC
RISC DSP Controller
R1120

RDC Semiconductor Co.
Rev 1.2
Subject to change without notice
2
Contents
------------------------------------------------------------------------------------------
page
1. Features ---------------------------------------------------------------------------------- 4
2.Block Diagram---------------------------------------------------------------------------- 5
3. Pin Configuration ----------------------------------------------------------------------- 6
4. Pin Description -------------------------------------------------------------------------- 9
5. Basic Application System Block & Read/Write timing Diagram --------- 15
6. Oscillator Characteristics ----------------------------------------------------------- 20
7. Execution Unit ------------------------------------------------------------------------- 21
7.1
General Register
------------------------------------------------------------------ 21
7.2
Segment Register
------------------------------------------------------------------ 21
7.3
Instruction Pointer and Status Flags Register
------------------------------- 22
7.4
Address Generation
--------------------------------------------------------------- 23
8. Peripheral Control Block Register ------------------------------------------------ 24
9. System Clock Block------------------------------------------------------------------- 26
10. Reset------------------------------------------------------------------------------------ 28
11. Bus Interface Unit ------------------------------------------------------------------- 31
11.1
Memory and I/O Interface
----------------------------------------------------- 31
11.2
Data Bus
-------------------------------------------------------------------------- 31
11.3
Wait States
----------------------------------------------------------------------- 32
11.4
Bus Hold
------------------------------------------------------------------------ 33
11.5 Bus Width ----------------------------------------------------------------------- 35
12. Chip Select Unit---------------------------------------------------------------------- 37
12.1
UCS
----------------------------------------------------------------------------- 37
12.2
LCS
------------------------------------------------------------------------------ 38
12.3
MCSx
--------------------------------------------------------------------------- 39
12.4
PCSx
---------------------------------------------------------------------------- 40
13. Interrupt Controller Unit---------------------------------------------------------- 44
13.1
Master Mode and Slave Mode
------------------------------------------------- 44
13.2
Interrupt Vector, Type and Priority
------------------------------------------- 45
13.3
Interrupt Request
--------------------------------------------------------------- 46
13.4
Interrupt Acknowledge
--------------------------------------------------------- 46
13.5
Programming Register
---------------------------------------------------------- 47

RDC
RISC DSP Controller
R1120

RDC Semiconductor Co.
Rev 1.2
Subject to change without notice
3

14. DMA Unit
----------------------------------------------------------------------------- 61
14.1
DMA Operation
----------------------------------------------------------------- 61
14.2
External Request
---------------------------------------------------------------- 66
14.3 Serial Port / DMA Transfer ------------------------------------------------- 68
15. Timer Control Unit
------------------------------------------------------------------ 69
15.1
Timer/Counter Unit Output Mode
------------------------------------------- 75
16. Watchdog Timer ------------------------------------------------------------------- 76
17. Asynchronous Serial Port---------------------------------------------------------- 78
17.1 Serial Port Flow Control --------------------------------------------------- 78
17.1.1 DCE/DTE Protocol ------------------------------------------------ 78
17.1.2 CTS/RTR Protocol
-------------------------------------------------- 79
17.2 DMA Transfer to/form a serial port function ------------------------ 79
17.3 The Asynchronous Modes description ---------------------------------- 80
18. PIO Unit ------------------------------------------------------------------------------- 85
18.1
PIO Multi-Function Pin list Table
------------------------------------------- 85
19. PSRAM Control Unit--------------------------------------------------------------- 88
20. Instruction Set Opcodes and Clock Cycle-------------------------------------- 89
20.1
R1120 Execution Timings
---------------------------------------------------- 93
21. I/O Characteristics of each pin -------------------------------------------------- 94
22. Add DC/AC Characteristics ------------------------------------------------------ 97
23. Package Information
-------------------------------------------------------------- 112
24. Revision History -------------------------------------------------------------------- 114
Appendix A -------------------------------------------------------------------------- 115
RDC
RDC
RDC
RDC
RISC DSP Controller
R1120

RDC Semiconductor Co.
Rev 1.2
Subject to change without notice
4
16-Bit Microcontroller with 16-bit external data bus
1. Features
Five-stages pipeline
RISC architecture
Integrated PLL(*1~*8)
Maximum frequency is 80 MHz, External bus, Internal bus and core are in the same clock base
Static Design & Synthesizable design
Bus interface
- Multiplexed address and Data bus which is compatible with 80C186 microprocessor
- Supports direct address bus [A19 : A0]
- 1M byte memory address space
- 64K byte I/O space
Software is compatible with generic 80C186 microprocessor
Support two Asynchronous serial channels with hardware handshaking signals.
Support CPU ID
Supports 32 PIO pins
PSRAM (Pseudo static RAM) interface with auto-refresh control
Three independent 16-bit timers and one independent watchdog timer
The Interrupt controller with seven maskable external interrupts and one non-maskable external interrupt(NMI)
Two independent DMA channels
Programmable chip-select logic for Memory or I/O bus cycle decoder
Programmable wait-state generator
The I/O Pin output is 3.3 volt level and the input is 3.3 volt to 5 volt tolerance.
3.3V operation voltage
Support serial port/ DMA transfers
Boot ROM bus size with 8-bit or 6-bit






RDC
RDC
RDC
RDC
RISC DSP Controller
R1120

RDC Semiconductor Co.
Rev 1.2
Subject to change without notice
5
2. Block Diagram





DMA
Unit
PSRAM
Control
Unit
Chip
Select
Unit
Refresh
Control
Unit
Bus
Interface
Unit
PIO
Unit
Timer Control
Unit
Interrupt
Control Unit
Clock & Power
Management
Asynchro-
nous Serial
Port0
Instruction
Queue (64bits)
Instruction
Decoder
Register
File
General,
Segment,
Eflag Register
ALU
(Special,
Logic,
Adder,
BSF)
Micro
ROM
EA / LA
Address
Control Signal
Execution
Unit
X1
X2
CLKOUTA
CLKOUTB INT6-INT4
INT0
TMRIN0
TMROUT0
TMRIN1
TMROUT1
DRQ0
DRQ1
TXD0
RXD0
A19~A0
AD15~AD0
ALE
RD
VCC
GND
LCS/ONCE0
MCS3/RFSH
UCS/ONCE1
PCS5/A1
PCS6/A2
ARDY
SRDY
S2~S0
DT/R
DEN
HOLD
HLDA
S6/CLKDIV2
UZI
WR
BHE/ADEN
WLB
WHB
Asynchro-
nous Serial
Port1
RTS0/RTR0
CTS0/ENRX0
TXD1
RXD1
RTS1/RTR1
CTS1/ENRX1
INT1/SELECT
INT3/INTA1/IRQ
INT2/INTA0
NMI
RST
MCS2-MCS0
PCS3-PCS0
PLL
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