AN2687 Freescale Semiconductor / Motorola, AN2687 Datasheet - Page 4

• Manufacturer Part Number: AN2687
• Description: BLDC Fan Control using the MC68HC908QT2
• Manufacturer: Freescale Semiconductor / Motorola

AN2687/D
Overview of the
MC68HC908QT2
4
The Motorola MC68HC908QT2 is a member of the HC08 Nitron family of
microcontrollers (MCUs). The features of the Nitron family include a 4-channel
analog-to-digital converter (ADC), IRQ, and a timer module that can be
configured for PWM signal generation. Available in various memory sizes,
8-pin and 16-pin packages, the Nitron family is particularly suited for
applications such as BLDC fan control.
The MC68HC908QT2 is an 8-pin device, with on-chip in-application
programmability, 1,536 bytes of user FLASH memory (with internal
program/erase voltage generation), 128 bytes RAM, 4-channel 8-bit ADC. The
trimmable internal oscillator with a ±5% accuracy helps to reduce system cost
by eliminating the external crystal oscillation circuit. The 2-channel, 16-bit timer
Freescale Semiconductor, Inc.
BLDC Fan Control using the MC68HC908QT2
For More Information On This Product,
Go to: www.freescale.com
Figure 3. BLDC Fan Evaluation Demo
Figure 4. BLDC Fan Reference Demo
MOTOROLA