R8820I RDC [RDC Semiconductor], R8820I Datasheet - Page 3

• Manufacturer Part Number: R8820I
• Description: 16-Bit RISC Microcontroller
• Manufacturer: RDC [RDC Semiconductor]

RDC
2. Block Diagram
Specifications subject to change without notice, contact your sales representatives for the most update information.
PCS3_n~PCS0_n
LCS_n/ONCE0_n
MCS3_n/RFSH_n
UCS_n/ONCE1_n
S6/CLKDIV2_n
MCS[2:0]
S2_n~S0_n
PCS5_n/A1
PCS6_n/A2
DT/R_n
RST_n
DEN_n
UZI_n
ARDY
SRDY
HOLD
HLDA
VCC
GND
A[19:0]
AD[15:0]
®
RISC DSP Communication
X1
Management
Select
ALE
Interface
Clock and
Chip
Unit
Control
Refresh
Control
PSRAM
Power
Unit
Unit
Unit
Bus
X2
CLKOUTA
BHE_n/ADEN_n
WR_n
WLB_n
CLKOUTB
WHB_n
INT3/INTA1_n/IRQ
RD_n
INT6~4
Eflag Register
INT2/INTA0_n
Control Unit
Queue (64bits)
Interrupt
Register
General,
Segment,
Instruction
Page 3 of
Instruction
(Special,
File
Logic,
Adder,
Decoder
ALU
BSF)
INT1/SELECT_n
INT0
Control Signal
NMI
9
TMRIN0
Timer Control
TMROUT0
Execution
Unit
Micro
EA / LA
Address
TMRIN1
ROM
Unit
TMROUT1
16-Bit RISC Microcontroller
DRQ0
nous Serial
nous Serial
Unit
Asynchro-
Asynchro-
DMA
Port0
Port1
REV 1.0
Unit
DRQ1
PIO
May. 31 2007
R8820I
PIO[31:0]
CTS0_n/ENRX0_n
TXD0
RXD0
TXD1
RXD1
CTS1_n/ENRX1_n
RTS0_n/RTR0_n
RTS1_n/RTR1_n