Download New Devices: PIC18C242, PIC18C442, PIC18C252

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For Immediate Release
Editorial Contact:
Eric Sells
Microchip Technology Inc.
(480) 786-7478
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8-BIT MICROCONTROLLERS INTEGRATE
FIRST 12-BIT ADC IN SMALL 20-PIN PACKAGE
CHANDLER, Ariz., Sept. 7, 1999 [NASDAQ: MCHP] — Expanding its advanced analog
technology for embedded systems designers, Microchip Technology Inc. today debuted the
world’s first 8-bit microcontrollers that integrate a new level of advanced analog capability
in the very small 20-pin package. The PIC16C717, PIC16C770 and PIC16C771 pack a high
resolution 10- or 12-bit analog-to-digital converter (ADC), enhanced Capture/Compare/ Pulsewidth-modulation and an on-chip voltage reference, in a small footprint package.
The PIC16C717 and the PIC16C770 feature 2,048 x 14 bits of OTP program memory,
and the PIC16C771 features 4,096 x 14 bits of OTP program memory. All three devices contain
256 bytes of user RAM. The devices have 5 MIPS performance at 20 MHz, 16 I/O pins, 4 MHz
internal clock oscillator, high-performance communication capability via I2C/SPI interfaces,
one 16-bit timer, two 8-bit timers, watchdog timer, and wide 2.5-5.5 operating voltage.
The 6-channel 12-bit ADC on the PIC16C770 and PIC16C771 and the 6-channel 10-bit
ADC on the PIC16C717 provide a level of resolution previously requiring a stand-alone ADC,
giving designers the ability to discriminate smaller signal changes. This is an important feature
when interfacing with a wide variety of sensors, and no external circuitry is required for high
precision measurement of analog signals.
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ADD ONE – PIC16C717, PIC16C770, PIC16C771 8-BIT MCUs
Precision timing interfaces are accommodated through one Capture/Compare/Pulsewidth-modulation module: capture at 12.5 nanoseconds maximum accuracy at 16-bit resolution,
compare at 200 nanoseconds maximum accuracy at 16-bit resolution and pulse-width modulation
(PWM) at 20 KHz accuracy at 10-bit resolution.
The PWM module now includes four outputs and dead band control along with three
operating modes of normal PWM, half-bridge mode and full-bridge mode. The half-bridge
mode has two outputs, one for each portion of the PWM waveform. Each of these outputs can
connect to a driver in a push-pull configuration. There is also a user-programmable delay, or
deadband, to avoid both drivers in this configuration from being active at the same time (shootthrough). The full-bridge mode has four outputs for usage in an H-Bridge configuration. This
configuration reduces the number of active elements in the circuit to one output on steady state
and one output switching at the PWM rate. This reduces the current consumption of the circuit.
Either the half-bridge or full-bridge mode can be used to drive a single pole DC and AC motor in
either forward or reverse direction. These modes can also be used to make a variable AC output
for applications such as uninterruptible power supplies.
The on-chip voltage reference (+/- 3% accuracy), derived from an on-chip band gap, can
be used to drive the ADC, supplying the high, low or both references required. It can also be
used as an output for rational sensing. Other advanced analog features include a user
programmable brown-out detect (+/- 3%) at 50 microamps current with four voltage trip points,
and a user programmable low-voltage detect (+/- 3%) at 50 microamps to 11 setpoints or usersupplied external voltage source.
The devices complement Microchip’s PIC16C773 and PIC16C774, which feature a
12-bit ADC in 28- and 40-pin packages, respectively. The company also recently announced the
MCP320X family of stand-alone 12-bit ADCs, allowing digital designers to select the most
appropriate analog technology for their applications.
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ADD TWO – PIC16C717, PIC16C770, PIC16C771 8-BIT MCUs
In addition to the advanced analog peripherals, the PIC16C717, PIC16C770 and
PIC16C771 feature a rich variety of oscillator options. The user has the option to connect an
external crystal, resonator, or resistor to set the clock frequency. These devices also have a dual
speed internal RC oscillator operating at frequencies of 4 MHz and 37 KHz. The engineer can
dynamically switch between the two internal RCs or between the external resistor and the
internal 37 KHz RC for power savings.
Applications for the PIC16C717, PIC16C770 and PIC16C771 may include motor
controller, instrumentation, remote sensing, battery charging, uninterruptible power supply,
switching power supply, automotive actuator, data logger, environmental monitoring and
medical monitoring.
Microchip’s PICmicro OTP and Flash microcontrollers feature In-Circuit Serial
Programming (ICSP), which allows the microcontroller to be programmed after being placed
in a circuit board. This offers tremendous flexibility, reduces development time and
manufacturing cycles, and improves time to market. ICSP also enables reduced cost of field
upgrades, system calibration during manufacturing, the addition of unique identification codes to
the system and calibration of the system in the field. Requiring only two I/O pins for most
devices, Microchip offers the most non-intrusive programming available today.
The MPLAB-ICE 2000 Universal In-Circuit Emulator provides high-performance realtime emulation for the PIC16C717, PIC16C770 and PIC16C771. The system features the
sophisticated MPLAB Integrated Development Environment. Interchangeable processor
modules and device adapters allow the emulator system to be easily configured to emulate
different processors. MPLAB-ICE 2000 emulates voltages as low as 2.0 volts and can emulate
at full speed. Operating in the Microsoft Windows environment, MPLAB gives users the
flexibility to edit, compile and emulate all from a single user interface—at no additional cost.
Pricing for MPLAB-ICE 2000 starts at $1,995. Microchip offers additional support, including
development and programming tools.
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ADD THREE – PIC16C717, PIC16C770, PIC16C771 8-BIT MCUs
Pricing in 1,000-unit quantities (industrial temperature versions) is $2.84 each for the
PIC16C717, $3.69 each for the PIC16C770 and $4.11 each for the PIC16C771. The PIC16C717
is available in 18-pin PDIP and SOIC and 20-pin SSOP packages. The PIC16C770 and
PIC16C771 are available in 20-pin PDIP, SOIC, and SSOP packages. Samples are planned for
October 1999 with volume production scheduled for December 1999. For more information,
contact any Microchip sales representative or authorized worldwide distributor.
Microchip Technology Inc. manufactures the PICmicro family of 8-bit RISC-based
microcontrollers—with OTP, Flash, and ROM memory technologies; serial EEPROMs;
KEELOQ code hopping devices; related microperipheral products including RFID, analog and
system supervisor ICs; and other specialized semiconductor products. These products target
thousands of embedded control applications in the consumer, automotive, office automation,
communications and industrial markets. Microchip’s quality systems are ISO 9001 certified.
Headquartered near Phoenix in Chandler, Ariz., Microchip employs approximately 2,000 people
worldwide and has sales offices throughout Asia, Europe, Japan and the Americas.
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Note: The Microchip name and logo, PIC, PICmicro, and KEELOQ are registered trademarks of Microchip Technology Inc. in the USA and
other countries. ICSP, In-Circuit Serial Programming, and MPLAB are trademarks of Microchip Technology Inc. in the USA and other
countries. I2C is a trademark of Philips Corporation. SPI is a trademark of Motorola. All other trademarks are the property of their respective
owners.