C8051F326 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

C8051F326

Full Speed USB, 16 kB Flash MCU Family

Unspecified 

C8051F326/7

1. System Overview

C8051F326/7 devices are fully integrated mixed-signal system-on-a-chip MCUs. Highlighted features are

listed below. Refer to Table 1.1 for specific product feature selection.

• High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)

• In-system, full-speed, non-intrusive debug interface (on-chip)

• Universal serial bus (USB) function controller with three fixed-function endpoint pipes, integrated trans-

ceiver, and 256B FIFO RAM

• Supply voltage regulator

• Precision programmable 12 MHz internal oscillator and 4x clock multiplier

• 16 kB of on-chip Flash memory

• 1536 total bytes of on-chip RAM (256 + 1 k + 256 USB FIFO)

• Enhanced UART, serial interfaces implemented in hardware

• Two general-purpose 16-bit timers

• On-chip power-on reset, VDD monitor, and missing clock detector

• 15 Port I/O (5 V tolerant)

With on-chip power-on reset, VDD monitor, voltage regulator, and clock oscillator, C8051F326/7 devices

are truly stand-alone System-on-a-Chip solutions. The Flash memory can be reprogrammed in-circuit, pro-

viding non-volatile data storage, and also allowing field upgrades of the 8051 firmware. User software has

complete control of all peripherals, and may individually shut down any or all peripherals for power sav-

ings.

The on-chip Silicon Laboratories 2-Wire (C2) Development Interface allows non-intrusive (uses no on-chip

resources), full speed, in-circuit debugging using the production MCU installed in the final application. This

debug logic supports inspection and modification of memory and registers, setting breakpoints, single

stepping, run and halt commands. All analog and digital peripherals are fully functional while debugging

using C2. The two C2 interface pins can be shared with user functions, allowing in-system debugging with-

out occupying package pins.

Each device is specified for 2.7–5.25 V operation over the industrial temperature range (–40 to +85 °C).

For voltages above 3.6 V, the on-chip Voltage Regulator must be used. A minimum of 3.0 V is required for

USB communication. The Port I/O and RST pins are tolerant of input signals up to 5 V. C8051F326/7 are

available in two 28-pin QFN packages with different pinouts. The RoHS compliant devices are marked with

a -GQ suffix in the part number. The port I/O on C8051F326 devices is powered from a separate I/O supply

allowing it to interface to low voltage logic.

Table 1.1. Product Selection Guide

C8051F326

25 16 1536

C8051F326-GQ 25 16 1536

C8051F327

25 16 1536

C8051F327-GQ 25 16 1536

Rev. 0.5

2 15

QFN-28

2 15

QFN-28

2 15 — QFN-28

2 15 — QFN-28

13

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