C8051F326 Datasheet, PDF (21/140 Pages) List of Unclassifed Manufacturers – Full Speed USB, 16 kB Flash MCU Family

C8051F326/7
1.6. Programmable Digital I/O
C8051F326/7 devices include 15 I/O pins (one byte-wide Port, one 6-bit-wide and one 1-bit-wide Port).
The C8051F326/7 Ports behave like typical 8051 Ports with a few enhancements. Each Port pin may be
configured as a digital input or output pin. Pins selected as digital outputs may additionally be configured
for push-pull or open-drain output. The “weak pullups” that are fixed on typical 8051 devices may be glo-
bally disabled, providing power savings capabilities.
1.7. Serial Ports
The C8051F326/7 Family includes a full-duplex UART with enhanced baud rate configuration. The serial
interface is fully implemented in hardware and makes extensive use of the CIP-51's interrupts, thus requir-
ing very little CPU intervention.
Rev. 0.5
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