The C8051F04x family of devices are fully integrated mixed-signal System-on-a-Chip MCUs with 64 digital
I/O pins (C8051F040/2/4/6) or 32 digital I/O pins (C8051F041/3/5/7), and an integrated CAN 2.0B control-
ler. Highlighted features are listed below; refer to Table 1.1 for specific product feature selection.
High-Speed pipelined 8051-compatible CIP-51 microcontroller core (up to 25 MIPS)
Controller Area Network (CAN 2.0B) Controller with 32 message objects, each with its own indentifier
In-system, full-speed, non-intrusive debug interface (on-chip)
True 12-bit (C8051F040/1) or 10-bit (C8051F042/3/4/5/6/7) 100 ksps 8-channel ADC with PGA and
High Voltage Difference Amplifier input to the 12/10-bit ADC (60 V Peak-to-Peak) with programmable
True 8-bit 500 ksps 8-channel ADC with PGA and analog multiplexer (C8051F040/1/2/3)
Two 12-bit DACs with programmable update scheduling (C8051F040/1/2/3)
•64 kB (C8051F040/1/2/3/4/5) or 32 kB (C8051F046/7) of in-system programmable Flash memory
4352 (4096 + 256) bytes of on-chip RAM
External Data Memory Interface with 64 kB address space
SPI, SMBus/I2C, and (2) UART serial interfaces implemented in hardware
Five general purpose 16-bit Timers
Programmable Counter/Timer Array with six capture/compare modules
On-chip Watchdog Timer, VDD Monitor, and Temperature Sensor
With on-chip VDD monitor, Watchdog Timer, and clock oscillator, the C8051F04x family of devices are truly
stand-alone System-on-a-Chip solutions. All analog and digital peripherals are enabled/disabled and con-
figured by user firmware. The Flash memory can be reprogrammed even in-circuit, providing non-volatile
data storage, and also allowing field upgrades of the 8051 firmware.
On-board JTAG debug circuitry allows non-intrusive (uses no on-chip resources), full speed, in-circuit pro-
gramming and debugging using the production MCU installed in the final application. This debug system
supports inspection and modification of memory and registers, setting breakpoints, watchpoints, single
stepping, Run, and Halt commands. All analog and digital peripherals are fully functional while debugging
Each MCU is specified for 2.7 V to 3.6 V operation over the industrial temperature range (–45 to +85 °C).
The Port I/Os, /RST, and JTAG pins are tolerant for input signals up to 5 V. The C8051F040/2/4/6 are avail-
able in a 100-pin TQFP and the C8051F041/3/5/7 are available in a 64-pin TQFP.