Two Serial Peripheral Interfaces (Spi); Two General-Purpose 32-Bit Counters/Timers; Watchdog Timer - Motorola DragonBall MC9328MX1 Reference Manual

Integrated portable system processor
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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

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