產品資訊

Features Document Support

80C51 Central Processing Unit
MG87FE(L)2051 with 2KB flash ROM
Operating voltage: E type: 4.5V~5.5V and L type: 2.4V~3.6V
Operating Voltage:
- Internal RC-oscillator with +/- 1% frequency drift @ 25℃, there are 6 kinds of frequencies selectable: By U1 writer setting only.
  
  Internal oscillator frequency
  
  1 6MHz
  
  2 11.059MHz
  
  3 12Mhz
  
  4 22.118MHz
  
  5 24Mhz
  
  6 24.576Mhz
- +/- 1% frequency drift @ 25℃
- +/- 2% frequency drift @ -20 ~ 50℃
- +/- 4% frequency drift @ -40 ~ 85℃
Built-in Megawin standard ISP
IAP capability; 1KB IAP memory size
On-chip 256 bytes data RAM
Code protection for flash memory access
Two 16-bit timer/counter
PWM-Timer for PWM generator or normal 8-bit timer, selectable interrupt on INT3
Five sources, four-level-priority interrupt capability.
Enhanced UART, provides frame-error detection and hardware address-recognition
15 bits Watch-Dog-Timer with 8-bit pre-scalar, one-time enabled by CPU or power-on
Power control: idle mode and power-down mode, Power-down can be woken-up by, INT3(P4.2)/P1.2*, and other I/O.
I/O port list, P3.0, P3.1, P1.2,P1.5 & P1.6