C8051F021 Silicon Laboratories Inc, C8051F021 Datasheet - Page 4

• Manufacturer Part Number: C8051F021
• Description: IC 8051 MCU 64K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F02xr

Specifications of C8051F021

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

C8051F020/1/2/3
10. VOLTAGE REFERENCE (C8051F021/3)..........................................................................93
11. COMPARATORS..................................................................................................................95
12. CIP-51 MICROCONTROLLER........................................................................................101
13. RESET SOURCES ..............................................................................................................127
14. OSCILLATORS...................................................................................................................135
15. FLASH MEMORY ..............................................................................................................139
16. EXTERNAL DATA MEMORY INTERFACE AND ON-CHIP XRAM.......................145
4
12.1.Instruction Set................................................................................................................102
12.2.Memory Organization ...................................................................................................107
12.3. Interrupt Handler ...........................................................................................................116
12.4. Power Management Modes ...........................................................................................125
13.1.Power-on Reset..............................................................................................................128
13.2.Power-fail Reset ............................................................................................................128
13.3.External Reset................................................................................................................129
13.4. Software Forced Reset...................................................................................................129
13.5.Missing Clock Detector Reset .......................................................................................129
13.6.Comparator0 Reset ........................................................................................................129
13.7.External CNVSTR Pin Reset.........................................................................................129
13.8. Watchdog Timer Reset ..................................................................................................129
14.1. External Crystal Example..............................................................................................138
14.2.External RC Example ....................................................................................................138
14.3. External Capacitor Example..........................................................................................138
15.1.Programming The FLASH Memory .............................................................................139
15.2.Non-volatile Data Storage .............................................................................................140
15.3.Security Options ............................................................................................................140
12.1.1. Instruction and CPU Timing................................................................................102
12.1.2. MOVX Instruction and Program Memory...........................................................102
12.2.1. Program Memory .................................................................................................107
12.2.2. Data Memory .......................................................................................................108
12.2.3. General Purpose Registers ...................................................................................108
12.2.4. Bit Addressable Locations ...................................................................................108
12.2.5. Stack .................................................................................................................108
12.2.6. Special Function Registers...................................................................................109
12.2.7. Register Descriptions ...........................................................................................113
12.3.1. MCU Interrupt Sources and Vectors ...................................................................116
12.3.2. External Interrupts ...............................................................................................116
12.3.3. Interrupt Priorities................................................................................................118
12.3.4. Interrupt Latency..................................................................................................118
12.3.5. Interrupt Register Descriptions ............................................................................119
12.4.1. Idle Mode .............................................................................................................125
12.4.2. Stop Mode............................................................................................................125
13.8.1. Enable/Reset WDT ..............................................................................................130
13.8.2. Disable WDT .......................................................................................................130
13.8.3. Disable WDT Lockout.........................................................................................130
13.8.4. Setting WDT Interval...........................................................................................130
Rev. 1.4