December 2001
CR16MES5/CR16MES9/CR16MFS5/CR16MFS9/
CR16MHS5/CR16MHS9/CR16MNS5/CR16MNS9/
CR16MPS5/CR16MUS5/CR16MUS9
CompactRISC 16-Bit Microcontrollers
General Description
Features
n CPU Features
™
The family of CompactRISC microcontrollers are general-
— Fully static core, capable of operating at any rate
from 0 to 24MHz (4 MHz minimum in active mode)
— Multi-source vectored interrupts (internal, external,
and on-chip peripheral)
— On-chip power-on reset
n On-Chip Memory
purpose 16-bit microcontrollers based on a Reduced Instruc-
tion Set Computer (RISC) architecture. The device operates
as a complete microcomputer with all system timing, inter-
rupt logic, flash program memory or ROM memory, RAM,
EEPROM data memory, and I/O ports included on-chip. It is
ideally suited to a wide range of embedded controller appli-
cations because of its high performance, on-chip integrated
features and low power consumption, resulting in decreased
system cost.
— 48 kbytes of flash program memory or ROM memory
(100K cycle)
— 1.5 kbytes of ISP memory (100K cycle)
— 2 kbytes of static RAM data memory
— 640 bytes of non-volatile EEPROM data memory,
word-programmable (100K cycle)
n On-Chip Peripherals
— Up to two Universal Synchronous/Asynchronous
Receiver/Transmitter (USART) devices
— Programmable Idle Timer and real-time clock (T0)
— Up to two dual 16-bit multi-function timers (MFT1 and
MFT2)
— SPI/MICROWIRE-PLUS serial interface
— 8-channel, 8-bit Analog-to-Digital (A/D) converter with
external voltage reference, programmable
sample-and-hold delay, and programmable
conversion frequency
— Up to two analog comparators
— Integrated WATCHDOG logic
n I/O Features
— Up to 48 general-purpose I/O pins (shared with
on-chip peripheral I/O pins)
— Programmable I/O pin characteristics: TRI-STATE
output, push-pull output, weak pull-up input,
high-impedance input
— Software-configurable Schmitt triggers on inputs
n Power Supply
— 4.5V to 5.5V single-supply operation
n Temperature Range
— 0˚C to +70˚C
— –40˚C to +85˚C
— –40˚C to +125˚C
n Development Support
— Real-time emulation and full program debug
capabilities available
The family of CompactRISC 16-bit microcontrollers offer the
high performance of a RISC architecture while retaining the
advantages of a traditional Complex Instruction Set Com-
puter (CISC): compact code, on-chip memory and I/O, and
reduced cost. The CPU uses a three-stage instruction pipe-
line that allows execution of up to one instruction per clock
cycle, or up to 20 million instructions per second (MIPS) at a
clock rate of 24MHz.
In the following text, device is alsays refered to the family of
CompactRISC 16-bit microcontrollers. For the exact feature
set, check individual datasheets.
The device is available in a variety of package sizes and
types. All devices have 48 kbytes of reprogrammable flash
program memory, 1.5 kbytes of ISP memory, 2 kbytes of
static RAM, and 640 bytes of non-volatile EEPROM data
memory. The 80-pin device has two USARTs, two 16-bit
™
multi-function timers, one SPI/MICROWIRE-PLUS serial
interface, an 8-channel A/D converter, two analog compara-
™
tors, WATCHDOG protection mechanism, and up to 48
general-purpose I/O pins. The 44-pin devices offer the same
basic features as the 80-pin device, but with fewer I/O ports
and peripheral modules due to the smaller number of avail-
able pins.
All devices operate with a high-frequency crystal as the main
clock source. Some packages allow the device to operate
with either the main clock source or with a slow (32.768 KHz)
oscillator in Power Save mode. The device supports several
Power Save modes which are combined with multi-source
interrupt and wake-up capabilities.
Powerful cross-development tools are available from Na-
tional Semiconductor and third party suppliers to support the
development and debugging of application software for the
device. These tools let you program the application software
in C and are designed to take full advantage of the Compac-
tRISC architecture.
— CompactRISC tools provide C programming and
debugging support
Please check the web for the latest update to this datasheet.
© 2001 National Semiconductor Corporation
DS200321
www.national.com
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