R8821 RDC [RDC Semiconductor], R8821 Datasheet - Page 2

• Manufacturer Part Number: R8821
• Description: 16-BIT RISC MICROCONTROLLER
• Manufacturer: RDC [RDC Semiconductor]

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1.
l CPU Core
l Bus Interface
l ROM/RAM/DRAM Controller and Addressing
l Two independent DMA channels
l Asynchronous Serial Channels
Specifications subject to change without notice, contact your sales representatives for the most update information.
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- RDC’s proprietary RISC architecture
- Five-stage pipeline
- CPU clock speed: 40MHz
- Supports CPU ID
- Supports 32 PIO pins
- Static & synthesizable design
- Multiplexed address and data bus
- Supports a non-multiplexed address bus A[19:0]
- 8-bit or 16-bit external bus dynamic access
Space
- 1M-byte memory address space
- 64K-byte I/O space
- With 8-bit or 16-bit boot ROM bus size
- Supports 64Kx16, 128Kx16, 256Kx16 EDO or FP
- Supports two asynchronous serial channels with
Features
D
DRAM with auto-refresh control
hardware handshaking signals
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l Interrupt Controller
l Programmable Chip-select Logic
l Programmable Wait-state Generators
l Counters/Timers
l Software Compatible with the 80C186
l Operating Voltage Range
l Ambient Temperature: 0 ~ +70 C
l Package Type
-
-
- The Interrupt controller with seven maskable
- Programmable chip-select logic for memory or
- Three independent 16-bit timers and one
Microprocessor
-100-pin PQFP & 100-pin LQFP
external interrupts and one non-maskable
external interrupt
I/O bus cycle decoder
independent programmable watchdog timer
Core voltage: 5V ± 10%
I/O voltage: 5V ± 10%
16-BIT RISC MICROCONTROLLER
REV 1.0 Jul.11 2006
R8821