以下我们提供对C8051F921芯片的主要功能特征介绍，供客户及解密工程师参考借鉴，C8051F921芯片是橙盒芯片解密研究所成功破解的典型单片机型号之一，有C8051F921解密（破解）需求者欢迎与橙盒芯片解密研究所联系咨询更多解密合作详情及解密报价信息。
芯片解密咨询电话：0755-82173891，82221641
咨询QQ：418219082 ，994589503
Email：chkeji@126.com
C8051F921芯片主要功能特征介绍：
Supply Voltage: 0.9 to 3.6 V
-One-cell mode supports 0.9-1.8 V operation
-Two-cell mode supports 1.8-3.6 V operation
-Built-in dc-dc converter with 1.8 -3.3 V output (65 mW max) for use in one-cell mode; can supply external devices
-Typical sleep mode current < 0.1 μA; retains state and RAM?contents over full supply range; fast wakeup
-2 built-in brown-out detectors cover sleep and active modes
10-Bit Analog to Digital Converter
-Up to 300 ksps
-Up to 15 external inputs
-External pin or internal VREF (no external capacitor required)
-Built-in temperature sensor
-External conversion start input option
-Autonomous Burst Mode with 16-bit automatic averaging accumulator
Two Comparators
-Programmable hysteresis and response time
-Configurable as interrupt or reset source
-Low current (< 0.5 μA)
-Up to 15 Capacitive Touch Sense inputs
Memory
-4352 bytes internal data RAM (256 + 4K)
-32 kB bytes Flash; In-system programmable in 1024-byte sec?tors; Full read/write/erase functionality over the entiresupply range
On-Chip Debug
-On-chip debug circuitry facilitates full speed, non-intrusive in-system debug (no emulator required)
High-Speed 8051 μC Core
-Pipe-lined instruction architecture; executes 70% of instructions in 1 or 2 system clocks
-25 MIPS peak throughput with 25 MHz clock
-Expanded interrupt handler
Digital Peripherals
-16 port I/O; All 5 V tolerant with programmable drive strength
-Hardware enhanced UART, SPI and SMBus? serial ports available concurrently
-Low power 32-bit smaRTClock (0.5 uA) operates down to 0.9V
-Four general purpose 16-bit counter/timers
-16-bit programmable counter array (PCA) with six capture/com?pare modules and watchdog timer:
8, 9, 10, 11, or 16-bit PWM
Rising/falling edge capture
Frequency output
Software timer
Clock Sources
-Precision internal oscillators: 24.5 MHz with ±2% accuracy sup?ports UART operation; spread-spectrum mode for reduced EMI
-Low power internal oscillator: 20 MHz
-External oscillator: Crystal, RC, C, CMOS clock
-smaRTClock oscillator: 32.768 kHz crystal or self-oscillate
-Can switch between clock sources on-the-fly; useful in power saving modes
Ultra-Small Package
-24-pin QFN (4x4 mm)
Temperature Range: -40 to +85 °C
