Uvision - Keil C51

| Memory Type | Description | Example | |-------------|-------------|---------| | code | Read-only program memory (ROM) | const char code table[] = 1,2,3; | | data | Directly addressable internal RAM (0-0x7F) | unsigned char data var; | | idata | Indirectly addressable internal RAM (0-0xFF) | char idata buf[50]; | | xdata | External RAM (up to 64KB) | int xdata large_array[1000]; | | bdata | Bit-addressable internal RAM (0x20-0x2F) | char bdata flags; sbit flag0 = flags^0; |

void main(void) while(1) LED = 0; // Turn LED ON (active low assumed) delay_ms(500); LED = 1; // Turn LED OFF delay_ms(500); keil c51 uvision

| Action | Shortcut | |--------|----------| | Build | F7 | | Start/Stop Debug | Ctrl+F5 | | Step Over | F10 | | Step Into | F11 | | Toggle Breakpoint | F9 | | Memory Type | Description | Example |

void delay_ms(unsigned int ms) unsigned int i, j; for(i = 0; i < ms; i++) for(j = 0; j < 123; j++); // Approx 1ms at 12MHz sbit flag0 = flags^0

Embedded Systems Development using Keil μVision IDE for the 8051 Microcontroller (C51)