C8051T614-GQ Silicon Laboratories Inc, C8051T614-GQ Datasheet - Page 41

• Manufacturer Part Number: C8051T614-GQ
• Description: IC 8051 MCU 8K BYTE-PROG 32-LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051T61xr

Specifications of C8051T614-GQ

• Program Memory Type: OTP
• Program Memory Size: 8KB (8K x 8)
• Package / Case: 32-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 29
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051T6x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 29
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051FT610DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 21-ch x 10-bit
• Package: 32LQFP
• Device Core: 8051
• Family Name: C8051T61x
• Maximum Speed: 25 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1441

8.3.2. Tracking Modes
The AD0TM bit in register ADC0CN enables "delayed conversions", and will delay the actual conversion
start by three SAR clock cycles, during which time the ADC will continue to track the input. If AD0TM is left
at logic 0, a conversion will begin immediately, without the extra tracking time. For internal start-of-conver-
sion sources, the ADC will track anytime it is not performing a conversion. When the CNVSTR signal is
used to initiate conversions, ADC0 will track either when AD0TM is logic 1, or when AD0TM is logic 0 and
CNVSTR is held low. See Figure 8.2 for track and convert timing details. Delayed conversion mode is use-
ful when AMUX settings are frequently changed, due to the settling time requirements described in Section
“8.3.3. Settling Time Requirements” on page 42.
Timer 0, Timer 2, Timer 1 Overflow
(AD0CM[2:0]=000, 001, 010, 011)
Write '1' to AD0BUSY,
Figure 8.2. 10-Bit ADC Track and Conversion Example Timing
(AD0CM[2:0]=1xx)
SAR Clocks
AD0TM=1
AD0TM=0
AD0TM=1
AD0TM=0
CNVSTR
Clocks
Clocks
Clocks
SAR
SAR
SAR
N/C
A. ADC Timing for External Trigger Source
Track
B. ADC Timing for Internal Trigger Source
Track
Track
Track
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15* 16 17
1 2 3 4 5 6 7 8 9 10 11 12* 13 14
Rev 1.0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15* 16 17
1 2 3 4 5 6 7 8 9 10 11 12* 13 14
C8051T610/1/2/3/4/5/6/7
Convert
Convert
*Conversion Ends at rising edge of 15
*Conversion Ends at rising edge of 12
*Conversion Ends at rising edge of 15
*Conversion Ends at rising edge of 12
Convert
Convert
th
th
th
clock in 8-bit Mode
th
clock in 8-bit Mode
clock in 8-bit Mode
Track
clock in 8-bit Mode
N/C
Track
Track
41