C8051F819-GM Silicon Laboratories Inc, C8051F819-GM Datasheet - Page 74

• 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
13.5. CS0 Conversion Accumulator
CS0 can be configured to accumulate multiple conversions on an input channel. The number of samples to
be accumulated is configured using the CS0ACU2:0 bits (CS0CF2:0). The accumulator can accumulate 1,
4, 8, 16, 32, or 64 samples. After the defined number of samples have been accumulated, the result is con-
verted to a 16-bit value by dividing the 22-bit accumulator by either 1, 4, 8, 16, 32, or 64 (depending on the
CS0ACU[2:0] setting) and copied to the CS0DH:CS0DL SFRs.
74
N
N
Y
Y
N
Y
N
Y
conversions com-
conversions com-
CS0 Conversion
CS0INT Interrupt
CS0INT Interrupt
CS0INT Interrupt
CS0INT Interrupt
conversion com-
conversion com-
serviced after M
serviced after M
serviced after 1
serviced after 1
Complete
Behavior
Interrupt
pletes
pletes
plete
plete
Table 13.1. Operation with Auto-scan and Accumulate
M = Accumulator setting (1x, 4x, 8x, 16x, 32x, 64x)
CS0DH:CS0DL is greater than
CS0DH:CS0DL is greater than
Interrupt serviced after M con-
Interrupt serviced after M con-
than CS0THH:CS0THL; Auto-
Interrupt serviced after 1 con-
CS0 Greater Than Interrupt
16-bit accumulator is greater
16-bit accumulator is greater
version completes if value in
versions complete if value in
version completes if value in
versions complete if value in
Interrupt serviced after con-
than CS0THH:CS0THL
Auto-Scan stopped
CS0THH:CS0THL;
CS0THH:CS0THL
Scan stopped
Behavior
Rev. 1.0
If greater-than comparator detects conver-
unchanged; otherwise, CMUX0 updates to
If greater-than comparator detects conver-
unchanged; otherwise, CS0MX updates to
the next channel (CS0MX + 1) and wraps
the next channel (CS0MX + 1) and wraps
back to CS0SS after passing CS0SE
back to CS0SS after passing CS0SE
CS0THH:CS0THL, CMUX0 is left
CS0THH:CS0THL, CS0MX is left
sion value is greater than
sion value is greater than
CS0MX unchanged.
CS0MX unchanged.
CS0MX Behavior