•
MCUPLL generates FCLK to the CPU from either a 32 kHz, 32.768 kHz, or 38.4 kHz crystal
•
SYSTEM PLL generates the system clock and the 48 MHz clock for the USB from a 16 MHz or
either a 32 kHz, 32.768 kHz, or 38.4 kHz crystal
•
Support for three power modes for different power consumption needs: run, doze, and stop
1.8 Two Universal Asynchronous Receiver/Transmitters
(UART 1 and UART 2)
The MC9328MX1 UARTs feature:
•
Support for serial data transmit/receive operation: 7 or 8 data bits, 1 or 2 stop bits, and
programmable parity (even, odd, or none)
•
Programmable baud rates up to 1.00 MHz
•
32-byte FIFO on Tx and 32 half-word FIFO on Rx that support autobaud
•
IrDA 1.0 support
1.9 Two Serial Peripheral Interfaces (SPI)
The MC9328MX1 SPIs feature:
•
SPI 1is master/slave configurable, SPI 2 is master only
•
Up to 16-bit programmable data transfer
×
•
8
16 FIFO for both Tx and Rx data
1.10 Two General-Purpose 32-Bit Counters/Timers
The MC9328MX1 General-Purpose Counters/Timers feature:
•
Automatic interrupt generation
•
Programmable timer input/output pins
•
Input capture capability with programmable trigger edge
•
Output compare with programmable mode
1.11 Watchdog Timer
The MC9328MX1 Watchdog Timer features:
•
Programmable time out of 0.5 s to 64 s
•
Resolution of 0.5 s
MOTOROLA
Two Universal Asynchronous Receiver/Transmitters (UART 1 and UART 2)
Introduction
1-5