C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 14

• Manufacturer Part Number: C8051F321R
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321R

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1067-2

C8051F320/1
20. PROGRAMMABLE COUNTER ARRAY (PCA0) ........................................................235
14
Figure 19.3. T0 Mode 3 Block Diagram................................................................................220
Figure 19.4. TCON: Timer Control Register.........................................................................221
Figure 19.5. TMOD: Timer Mode Register...........................................................................222
Figure 19.6. CKCON: Clock Control Register......................................................................223
Figure 19.7. TL0: Timer 0 Low Byte ....................................................................................224
Figure 19.8. TL1: Timer 1 Low Byte ....................................................................................224
Figure 19.9. TH0: Timer 0 High Byte ...................................................................................224
Figure 19.10. TH1: Timer 1 High Byte .................................................................................224
Figure 19.11. Timer 2 16-Bit Mode Block Diagram .............................................................225
Figure 19.12. Timer 2 8-Bit Mode Block Diagram ...............................................................226
Figure 19.13. Timer 2 SOF Capture Mode (T2SPLIT = ‘0’) ................................................227
Figure 19.14. Timer 2 SOF Capture Mode (T2SPLIT = ‘1’) ................................................227
Figure 19.15. TMR2CN: Timer 2 Control Register ..............................................................228
Figure 19.16. TMR2RLL: Timer 2 Reload Register Low Byte ............................................229
Figure 19.17. TMR2RLH: Timer 2 Reload Register High Byte ...........................................229
Figure 19.18. TMR2L: Timer 2 Low Byte ............................................................................229
Figure 19.19. TMR2H Timer 2 High Byte ............................................................................229
Figure 19.20. Timer 3 16-Bit Mode Block Diagram .............................................................230
Figure 19.21. Timer 3 8-Bit Mode Block Diagram ...............................................................231
Figure 19.22. Timer 3 SOF Capture Mode (T3SPLIT = ‘0’) ................................................232
Figure 19.23. Timer 3 SOF Capture Mode (T3SPLIT = ‘1’) ................................................232
Figure 19.24. TMR3CN: Timer 3 Control Register ..............................................................233
Figure 19.25. TMR3RLL: Timer 3 Reload Register Low Byte ............................................234
Figure 19.26. TMR3RLH: Timer 3 Reload Register High Byte ...........................................234
Figure 19.27. TMR3L: Timer 3 Low Byte ............................................................................234
Figure 19.28. TMR3H Timer 3 High Byte ............................................................................234
Figure 20.1. PCA Block Diagram..........................................................................................235
Figure 20.2. PCA Counter/Timer Block Diagram .................................................................236
Table 20.1. PCA Timebase Input Options............................................................................236
Figure 20.3. PCA Interrupt Block Diagram...........................................................................237
Table 20.2. PCA0CPM Register Settings for PCA Capture/Compare Modules..................237
Figure 20.4. PCA Capture Mode Diagram ............................................................................238
Figure 20.5. PCA Software Timer Mode Diagram................................................................239
Figure 20.6. PCA High Speed Output Mode Diagram ..........................................................240
Figure 20.7. PCA Frequency Output Mode ...........................................................................241
Figure 20.8. PCA 8-Bit PWM Mode Diagram ......................................................................243
Figure 20.9. PCA 16-Bit PWM Mode ...................................................................................244
Figure 20.10. PCA Module 4 with Watchdog Timer Enabled ..............................................246
Table 20.3. Watchdog Timer Timeout Intervals† ................................................................247
Figure 20.11. PCA0CN: PCA Control Register ....................................................................248
Figure 20.12. PCA0MD: PCA Mode Register ......................................................................249
Figure 20.13. PCA0CPMn: PCA Capture/Compare Mode Registers ...................................250
Figure 20.14. PCA0L: PCA Counter/Timer Low Byte .........................................................251
Figure 20.15. PCA0H: PCA Counter/Timer High Byte ........................................................251
Rev. 1.1