C8051F018-GQR Silicon Laboratories Inc, C8051F018-GQR Datasheet - Page 140

• Manufacturer Part Number: C8051F018-GQR
• Description: IC 8051 MCU 16K FLASH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F018r

Specifications of C8051F018-GQR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: C8051F0x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4 bit
• Operating Supply Voltage: 2.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F005DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

18.1.2. Software Timer (Compare) Mode
In Software Timer mode, the PCA counter/timer is compared to the module’s 16-bit capture/compare register
(PCA0CPHn and PCA0CPLn). When a match occurs, the Capture/Compare Flag (CCFn) in PCA0CN is set to
logic 1 and an interrupt request is generated if CCF interrupts are enabled. The CCFn bit is not automatically
cleared by hardware when the CPU vectors to the interrupt service routine, and must be cleared by software.
Setting the ECOMn and MATn bits in the PCA0CPMn register enables Software Timer mode.
18.1.3. High Speed Output Mode
In this mode, each time a match occurs between the PCA Timer Counter and a module’s 16-bit capture/compare
register (PCA0CPHn and PCA0CPLn) the logic level on the module’s associated CEXn pin will toggle. Setting the
TOGn, MATn, and ECOMn bits in the PCA0CPMn register enables the High-Speed Output mode.
PCA0CPLn
Write to
Reset
PCA0CPLn
Write to
PCA0CPHn
Reset
Write to
PCA0CPHn
Write to
0
ENB
ENB
1
0
1
ENB
ENB
PCA
Timebase
Figure 18.5. PCA High Speed Output Mode Diagram
Figure 18.4. PCA Software Timer Mode Diagram
Enable
E
C
O
M
n
PCA0CPMn
C
A
P
P
n
0 0
C
A
P
N
n
M
A
T
n
O
G
T
n
0 0
C
O
M
E
n
PCA0CPLn
W
PCA0CPMn
P
M
n
C
A
P
P
n
0 0
PCA0L
E
C
C
F
n
x
C
A
P
N
n
Enable
16-bit Comparator
M
A
T
n
O
G
T
n
W
M
P
n
0 x
PCA
Timebase
E
C
C
F
n
PCA0CPHn
PCA0H
Rev. 1.2
PCA0CPLn
PCA0L
16-bit Comparator
Match
Toggle
PCA0CPHn
PCA0H
C
F
C
R
PCA0CN
TOGn
0
1
C
C
F
4
C
C
F
3
0
1
C
C
F
2
PCA Interrupt
CEXn
C
C
F
1
C
C
F
0
Match
Crossbar
C8051F018
C8051F019
C
F
C
R
PCA0CN
0
1
C
C
F
4
C
C
F
3
Port I/O
C
C
F
2
PCA Interrupt
C
C
F
1
C
C
F
0
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