C8051F819-GM Silicon Laboratories Inc, C8051F819-GM Datasheet - Page 228

• Manufacturer Part Number: C8051F819-GM
• Description: IC MCU 8BIT 8KB FLASH 20QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F81xr

Specifications of C8051F819-GM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Cap Sense, POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051F8x
• Core: 8051
• Data Bus Width: 16 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F800DK
• Minimum Operating Temperature: - 55 C
• Package: 20QFN EP
• Device Core: 8051
• Family Name: C8051F8xx
• Maximum Speed: 25 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1799-5

C8051F80x-83x
29.3. Capture/Compare Modules
Each module can be configured to operate independently in one of six operation modes: edge-triggered
capture, software timer, high-speed output, frequency output, 8-bit through 15-bit pulse width modulator, or
16-bit pulse width modulator. Each module has Special Function Registers (SFRs) associated with it in the
CIP-51 system controller. These registers are used to exchange data with a module and configure the
module's mode of operation. Table 29.2 summarizes the bit settings in the PCA0CPMn and PCA0PWM
registers used to select the PCA capture/compare module’s operating mode. Note that all modules set to
use 8-bit through 15-bit PWM mode must use the same cycle length (8–15 bits). Setting the ECCFn bit in a
PCA0CPMn register enables the module's CCFn interrupt.
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Table 29.2. PCA0CPM and PCA0PWM Bit Settings for PCA Capture/Compare Modules
Operational Mode
Capture triggered by positive edge on CEXn
Capture triggered by negative edge on CEXn
Capture triggered by any transition on CEXn
Software Timer
High Speed Output
Frequency Output
8-Bit Pulse Width Modulator
9-Bit Pulse Width Modulator
10-Bit Pulse Width Modulator
11-Bit Pulse Width Modulator
12-Bit Pulse Width Modulator
13-Bit Pulse Width Modulator
14-Bit Pulse Width Modulator
15-Bit Pulse Width Modulator
16-Bit Pulse Width Modulator
16-Bit Pulse Width Modulator with Auto-Reload
Notes:
1. X = Don’t Care (no functional difference for individual module if 1 or 0).
2. A = Enable interrupts for this module (PCA interrupt triggered on CCFn set to 1).
3. B = Enable 8th through 15th bit overflow interrupt (Depends on setting of CLSEL[2:0]).
4. C = When set to 0, the digital comparator is off. For high speed and frequency output modes, the
5. D = Selects whether the Capture/Compare register (0) or the Auto-Reload register (1) for the associated
6. E = When set, a match event will cause the CCFn flag for the associated channel to be set.
7. All modules set to 8-bit through 15-bit PWM mode use the same cycle length setting.
associated pin will not toggle. In any of the PWM modes, this generates a 0% duty cycle (output = 0).
channel is accessed via addresses PCA0CPHn and PCA0CPLn.
7
7
7
7
7
7
7
7
Bit Number 7 6 5 4 3 2 1 0 7 6 5 4 3
Rev. 1.0
X X 1 0 0 0 0 A 0 X B X X XXX
X X 0 1 0 0 0 A 0 X B X X XXX
X X 1 1 0 0 0 A 0 X B X X XXX
X C 0 0 1 0 0 A 0 X B X X XXX
X C 0 0 1 1 0 A 0 X B X X XXX
X C 0 0 0 1 1 A 0 X B X X XXX
0 C 0 0 E 0 1 A 0 X B X X 000
0 C 0 0 E 0 1 A D X B X X 001
0 C 0 0 E 0 1 A D X B X X 010
0 C 0 0 E 0 1 A D X B X X
0 C 0 0 E 0 1 A D X B X X 100
0 C 0 0 E 0 1 A D X B X X 101
0 C 0 0 E 0 1 A D X B X X
0 C 0 0 E 0 1 A D X B X X
1 C 0 0 E 0 1 A 0 X B X 0 XXX
1 C 0 0 E 0 1 A D X B X 1 XXX
PCA0CPMn
PCA0PWM
1,2,3,4,5,6
2–0
011
110
111