Rev. 1.3 17
C8051F340/1/2/3/4/5/6/7/8/9/A/B
1. System Overview
C8051F340/1/2/3/4/5/6/7/8/9/A/B devices are fully integrated mixed-signal System-on-a-Chip MCUs. High-
lighted features are listed below. Refer to Table 1.1 for specific product feature selection.
• High-speed pipelined 8051-compatible microcontroller core (up to 48 MIPS)
• In-system, full-speed, non-intrusive debug interface (on-chip)
• Universal Serial Bus (USB) Function Controller with eigh
t flexible endpoint pipes, integrated trans-
ceiver, and 1 kB FIFO RAM
• Supply Voltage Regulator
• True 10-bit 200 ksps differential / single-ended AD
C w
ith analog multiplexer
• On-chip Voltage Reference and Temperature Sensor
• On-chip Voltage Comparators (2)
• Precision internal calibrated 12 MHz internal oscillator and 4x clock multiplier
• Internal low-frequency oscillator for additional pow
e
r savings
• Up to 64 kB of on-chip Flash memory
• Up to 4352 Bytes of on-chip RAM (256 + 4 kB)
• External Memory Interface (EMIF) available on 48-pin versions.
• SMBus/I2C, up to 2 UARTs, and Enhanced SPI ser
i
al interfaces implemented in hardware
• Four general-purpose 16-bit timers
• Programmable Counter/Timer Array (PCA) with five capture/compare modules and Watchdog Timer
function
• On-chip Power-On Reset, V
DD
Monitor, and Missing Clock Detector
• Up to 40 Port I/O (5 V tolerant)
With on-chip Power-On Reset,
V
DD
monitor, Voltage Regulator, Watchdog Timer, and clock oscillator,
C8051F340/1/2/3/4/5/6/7/8/9/A/B devices are truly stand-alone System-on-a-Chip solutions. The Flash
memory can be reprogrammed in-circuit, providing 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 savings.
The on-chip Silicon Labs 2-Wire (C2) D
e
velopment 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).
F
or
voltages above 3.6 V, the on-chip Voltage Regulator must be used. A minimum of 3.0 V is required for
USB comm
unication. The Port I/O and
RST pins are tolerant of input signals up to 5 V. C8051F340/1/2/3/
4/5/6/7/8/9/A/B devices are available in 48-pin TQFP, 32-pin LQFP, or 32-pin QFN packages. See
Table 1.1, “Product Selection Guide,” on page 18 for feature and package choices.
MS-8
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