参数资料
型号: R8820LV
厂商: Electronic Theatre Controls, Inc.
英文描述: 16-BIT RISC MICROCONTROLLER
中文描述: 16位RISC微控制器
文件页数: 4/98页
文件大小: 1000K
代理商: R8820LV
R DC
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
4
16-Bit Microcontroller with 16-bit external data bus
1. Features
l
Five-stages pipeline
l
RISC architecture
l
Static Design & Synthesizable design
l
Bus interface
- Multiplexed address and Data bus which
is compatible with 80C186 microprocessor
- Supports nonmultiplexed address bus [A19 : A0]
- 1M byte memory address space
- 64K byte I/O space
l
Software is compatible with the 80C186
microprocessor
l
Support two Asynchronous serial channel with
hardware handshaking signals.
l
Supports 32 PIO pins
l
PSRAM (Pseudo static RAM) interface with
auto-refresh control
l
Three independent 16-bit timers and one
independent watchdog timer
l
The Interrupt controller with seven maskable
external interrupts and one nonmaskable
external interrupt
l
Two independent DMA channels
l
Programmable chip-select logic for Memory
or I/O bus cycle decoder
l
Programmable wait-state generator
l
Support serial port/ DMA transfers
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
CloX2
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
CLKOUTA
CLKOUTB INT6-INT4
INT0
TMRIN0
TMROUT0
TMRIN1
TMROUT1
DRQ0
DRQ1
TXD0
RXD0
A19~A0
AD15~AD0ALE
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
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