C8051F705-GM Silicon Laboratories Inc, C8051F705-GM Datasheet - Page 95

• Manufacturer Part Number: C8051F705-GM
• Description: IC 8051 MCU 15K FLASH 48-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F70xr

Specifications of C8051F705-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: 39
• Program Memory Size: 15KB (15K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 32 x 8
• 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: 48-QFN
• Processor Series: C8051F7x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 39
• 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: C8051F700DK
• Minimum Operating Temperature: - 40 C
• Height: 0.95 mm
• Length: 7 mm
• Supply Voltage (max): 1.9 V, 3.6 V
• Supply Voltage (min): 1.7 V, 1.8 V
• Width: 7 mm
• For Use With: 336-1635 - DEV KIT FOR C8051F700
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 336-1612-5

SFR Definition 15.11. CS0MD2: Capacitive Sense Mode 2
SFR Address = 0xBE; SFR Page = F
Name
Reset
Bit
7:6
5:3
2:0
Type
Bit
CS0CR[1:0]
CS0DT[2:0]
CS0IA[2:0]
Name
7
0
CS0CR[1:0]
R/W
CS0 Conversion Rate.
These bits control the conversion rate of the CS0 module. See the electrical spec-
ifications table for specific timing.
00: Conversions last 12 internal CS0 clocks and are 12 bits in length.
01: Conversions last 13 internal CS0 clocks and are 13 bits in length.
10: Conversions last 14 internal CS0 clocks and are 14 bits in length.
11: Conversions last 16 internal CS0 clocks.and are 16 bits in length.
CS0 Discharge Time.
These bits adjust the primary CS0 reset time. For most touch-sensitive switches,
the default (fastest) value is sufficient, and these bits should not be modified.
000: Discharge time is 0.75 µs (recommended for most switches)
001: Discharge time is 1.0 µs
010: Discharge time is 1.2 µs
011: Discharge time is 1.5 µs
100: Discharge time is 2 µs
101: Discharge time is 3 µs
110: Discharge time is 6 µs
111: Discharge time is 12 µs
CS0 Output Current Adjustment.
These bits allow the user to adjust the output current used to charge up the capac-
itive sensor element. For most touch-sensitive switches, the default (highest) cur-
rent is sufficient, and these bits should not be modified.
000: Full Current (recommended for most switches)
001: 1/8 Current
010: 1/4 Current
011: 3/8 Current
100: 1/2 Current
101: 5/8 Current
110: 3/4 Current
111: 7/8 Current
6
1
5
0
CS0DT[2:0]
R/W
Rev. 1.0
4
0
Description
3
0
C8051F70x/71x
2
0
CS0IA[2:0]
R/W
1
0
0
0
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