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© 2003 Cygnal Integrated Products, Inc. DS010-1.0 APR03 Page 17
Preliminary
C8051F320/1
1. SYSTEM OVERVIEW
C8051F320/1 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 eight flexible endpoint pipes, integrated transceiver, and
1k FIFO RAM
• Supply Voltage Regulator (5V-to-3V)
• True 10-bit 200 ksps 17-channel single-ended/differential ADC with analog multiplexer
• On-chip Voltage Reference and Temperature Sensor
• On-chip Voltage Comparators (2)
• Precision programmable 12 MHz internal oscillator and 4x clock multiplier
• 16k bytes of on-chip FLASH memory
• 2304 total bytes of on-chip RAM (256 + 1k + 1k USB FIFO)
•SMBus/I
2
C, Enhanced UART, and Enhanced SPI serial 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, VDD Monitor, and Missing Clock Detector
• 25/21 Port I/O (5V tolerant)
With on-chip Power-On Reset, VDD monitor, Voltage Regulator, Watchdog Timer, and clock oscillator,
C8051F320/1 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 Cygnal 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 inspec-
tion and modification of memory and registers, setting breakpoints, single stepping, run and halt commands. All ana-
log 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 without occupying package pins.
Each device is specified for 2.7 V-to-3.6 V operation over the industrial temperature range (-40°C to +85°C). (Note
that 3.0 V-to-3.6 V is required for USB communication.) The Port I/O and /RST pins are tolerant of input signals up
to 5 V. C8051F320/1 are available in a 32-pin LQFP or a 28-pin MLP package.
Table 1.1. Product Selection Guide
MIPS (Peak)
FLASH Memory
RAM
Calibrated Internal Oscillator
USB
Supply Voltage Regulator
SMBus/I
2
C
Enhanced SPI
UART
Timers (16-bit)
Programmable Counter Array
Digital Port I/Os
10-bit 200ksps ADC
Temperature Sensor
Voltage Reference
Analog Comparators
Package
C8051F320 25 16k 2304 ! ! ! ! ! ! 4 ! 25 ! ! ! 2 LQFP-32
C8051F321 25 16k 2304 ! ! ! ! ! ! 4 ! 21 ! ! ! 2 MLP-28