Analog Peripherals
10-Bit ADC
- ±1 LSB INL; no missing codes
- Programmable throughput up to 200 ksps
- Up to 21 external inputs; programmable as single-ended or differential
- Data-dependent windowed interrupt generator
- Built-in temperature sensor (±3 °C)
Two Comparators
- Programmable hysteresis and response time
- Configurable to generate interrupts or reset
- Low current (0.4 µA)
POR/Brown-out Detector
On-Chip Debug
- On-chip debug circuitry facilitates full speed, non-intrusive in-system debug (no emulator required)
- Provides breakpoints, single stepping
- Inspect/modify memory and registers
- Superior performance to emulation systems using ICE-chips, target pods, and sockets
Supply Voltage: 2.7 to 3.6 V
- Typical Operating Current: 7 mA at 25 MHz
15 µA at 32 kHz
- Typical Stop Mode Current: <0.1 µA
High-Speed 8051 µC Core
- Pipelined instruction architecture; executes 70% of instructions in 1 or 2 system clocks
- Up to 25 MIPS throughput with 25 MHz system clock
- Expanded interrupt handler
Memory
- 1280 bytes data RAM
- 16 kB Flash; in-system programmable in 512-byte sectors (512 bytes are reserved)
Digital Peripherals
- 29 port I/O; all are 5 V tolerant
- Hardware SMBus™ (I2C™ compatible), SPI™, and UART serial ports available concurrently
- Programmable 16-bit counter/timer array with five capture/compare modules, WDT
- 4 general-purpose 16-bit counter/timers
- Realtime clock mode using timer or PCA
Clock Sources
- Internal oscillator: 24.5 MHz, 2% accuracy supports UART operation
- External oscillator: Crystal, RC, C, or Clock (1 or 2 pin modes)
- Can switch between clock sources on-the-fly
32-Pin LQFP
Temperature Range: –40 to +85 °C