C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 234

• Manufacturer Part Number: C8051F321
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321

• 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: -

C8051F320/1
234
Bits 7-0: TMR3RLL: Timer 3 Reload Register Low Byte.
Bits 7-0: TMR3RLH: Timer 3 Reload Register High Byte.
Bits 7-0: TMR3L: Timer 3 Low Byte.
Bits 7-0: TMR3H: Timer 3 High Byte.
R/W
R/W
R/W
R/W
Bit7
Bit7
Bit7
Bit7
TMR3RLL holds the low byte of the reload value for Timer 3 when operating in auto-reload mode, or
the captured value of the TMR3L register when operating in capture mode.
The TMR3RLH holds the high byte of the reload value for Timer 3 when operating in auto-reload
mode, or the captured value of the TMR3H register when operating in capture mode.
In 16-bit mode, the TMR3L register contains the low byte of the 16-bit Timer 3. In 8-bit mode,
TMR3L contains the 8-bit low byte timer value.
In 16-bit mode, the TMR3H register contains the high byte of the 16-bit Timer 3. In 8-bit mode,
TMR3H contains the 8-bit high byte timer value.
Figure 19.26. TMR3RLH: Timer 3 Reload Register High Byte
R/W
R/W
R/W
R/W
Figure 19.25. TMR3RLL: Timer 3 Reload Register Low Byte
Bit6
Bit6
Bit6
Bit6
R/W
R/W
R/W
R/W
Bit5
Bit5
Bit5
Bit5
Figure 19.27. TMR3L: Timer 3 Low Byte
Figure 19.28. TMR3H Timer 3 High Byte
R/W
R/W
R/W
R/W
Bit4
Bit4
Bit4
Bit4
Rev. 1.1
R/W
R/W
R/W
R/W
Bit3
Bit3
Bit3
Bit3
R/W
R/W
R/W
R/W
Bit2
Bit2
Bit2
Bit2
R/W
R/W
R/W
R/W
Bit1
Bit1
Bit1
Bit1
R/W
R/W
R/W
R/W
Bit0
Bit0
Bit0
Bit0
SFR Address:
SFR Address:
SFR Address:
SFR Address:
00000000
00000000
00000000
00000000
Reset Value
Reset Value
Reset Value
Reset Value
0x92
0x93
0x94
0x95