| 
 | 
 
   PIC18F2X1X/4X1X Data Sheet (10/27/2009) 
 
 
Power-Managed Modes: 
• Run: CPU On, Peripherals On 
• Idle: CPU Off, Peripherals On 
• Sleep: CPU Off, Peripherals Off 
• Idle mode Currents Down to 3.0 μA Typical 
• Sleep mode Currents Down to 20 nA Typical 
• Timer1 Oscillator: 1.8 μA, 32 kHz, 2V 
• Watchdog Timer: 2.1 μA 
• Two-Speed Oscillator Start-up 
Peripheral Highlights: 
• High-Current Sink/Source 25 mA/25 mA 
• Up to 2 Capture/Compare/PWM (CCP) modules,  
One with Auto-Shutdown (28-pin devices) 
• Enhanced Capture/Compare/PWM (ECCP)  
module (40/44-pin devices only): 
- One, two or four PWM outputs 
- Selectable polarity 
- Programmable dead time 
- Auto-shutdown and auto-restart 
• Master Synchronous Serial Port (MSSP) module  
Supporting 3-Wire SPI (all 4 modes) and I 
2C™  
Master and Slave modes 
• Enhanced Addressable USART module: 
- Supports RS-485, RS-232 and LIN 1.2 
- RS-232 operation using internal oscillator  
block (no external crystal required) 
- Auto-wake-up on Start bit 
- Auto-Baud Detect 
• 10-Bit, Up to 13-Channel Analog-to-Digital  
Converter module (A/D):  
- Auto-acquisition capability 
- Conversion available during Sleep 
• Dual Analog Comparators with Input Multiplexing 
• Programmable 16-Level High/Low-Voltage  
Detection (HLVD) module: 
- Supports interrupt on High/Low-Voltage Detection 
Flexible Oscillator Structure: 
• Four Crystal modes, Up to 40 MHz 
• 4x Phase Lock Loop (PLL) – Available for Crystal  
and Internal Oscillators 
• Two External RC modes, Up to 4 MHz 
• Two External Clock modes, Up to 40 MHz 
• Internal Oscillator Block: 
- 8 user-selectable frequencies, from 31 kHz to  
8MHz 
- Provides a complete range of clock speeds  
from 31 kHz to 32 MHz when used with PLL 
- User-tunable to compensate for frequency drift 
• Secondary Oscillator using Timer1 @ 32 kHz 
• Fail-Safe Clock Monitor: 
- Allows for safe shutdown if peripheral clock stops 
Special Microcontroller Features: 
• C Compiler Optimized Architecture:  
- Optional extended instruction set designed to  
optimize re-entrant code 
• 100,000 Erase/Write Cycle Flash Program  
Memory Typical 
• Three Programmable External Interrupts 
• Four Input Change Interrupts 
• Priority Levels for Interrupts 
• 8 x 8 Single-Cycle Hardware Multiplier 
• Extended Watchdog Timer (WDT): 
- Programmable period from 4 ms to 131s 
• Single-Supply 5V In-Circuit Serial  
Programming™ (ICSP™) via Two Pins 
• In-Circuit Debug (ICD) via Two Pins 
• Wide Operating Voltage Range: 2.0V to 5.5V 
• Programmable Brown-out Reset (BOR) with  
Software Enable Option 
 
 
推荐MICROCHIP全系列产品推广商:(可申请部分免费样片,资料,大家赶快行动吧!) 
授权A级代理商;提供技术支持;提供成熟方案;提供免费样品;提供详细资料。=============================================================== 
深圳市英锐恩科技有限公司 
联系电话:86-755-82543411,83167411,61357155 
联系传真:86-755-82543511 
Emil:enroo@enroo.com 
在线技术支持:(QQ)27781279 (QQ)908863634  
在线业务服务:(QQ)27781279 (QQ)46885145 (QQ)910737158 
总部地址:中国·深圳市福田区福华路嘉汇新城·汇商中心27楼2701 
公司网站:www.Enroo-Tech.com 或是 www.Enroo.com ; |   
 
 
 
 |