C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 222

• 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
222
Bit7:
Bit6:
Bits5-4:
Bit3:
Bit2:
Bits1-0:
GATE1
R/W
Bit7
GATE1: Timer 1 Gate Control.
0: Timer 1 enabled when TR1 = 1 irrespective of /INT1 logic level.
1: Timer 1 enabled only when TR1 = 1 AND /INT1 is active as defined by bit IN1PL in register
INT01CF (see Figure 8.13).
C/T1: Counter/Timer 1 Select.
0: Timer Function: Timer 1 incremented by clock defined by T1M bit (CKCON.4).
1: Counter Function: Timer 1 incremented by high-to-low transitions on external input pin (T1).
T1M1-T1M0: Timer 1 Mode Select.
These bits select the Timer 1 operation mode.
GATE0: Timer 0 Gate Control.
0: Timer 0 enabled when TR0 = 1 irrespective of /INT0 logic level.
1: Timer 0 enabled only when TR0 = 1 AND /INT0 is active as defined by bit IN0PL in register
INT01CF (see Figure 8.13).
C/T0: Counter/Timer Select.
0: Timer Function: Timer 0 incremented by clock defined by T0M bit (CKCON.3).
1: Counter Function: Timer 0 incremented by high-to-low transitions on external input pin (T0).
T0M1-T0M0: Timer 0 Mode Select.
These bits select the Timer 0 operation mode.
T1M1
T0M1
C/T1
0
0
1
1
0
0
1
1
R/W
Bit6
T1M0
T0M0
0
1
0
1
0
1
0
1
T1M1
Figure 19.5. TMOD: Timer Mode Register
R/W
Bit5
Mode
Mode
Mode 2: 8-bit counter/timer with auto-reload
Mode 2: 8-bit counter/timer with auto-reload
Mode 3: Two 8-bit counter/timers
T1M0
R/W
Bit4
Mode 0: 13-bit counter/timer
Mode 1: 16-bit counter/timer
Mode 0: 13-bit counter/timer
Mode 1: 16-bit counter/timer
Mode 3: Timer 1 inactive
Rev. 1.1
GATE0
R/W
Bit3
C/T0
R/W
Bit2
T0M1
R/W
Bit1
T0M0
R/W
Bit0
SFR Address:
00000000
Reset Value
0x89