C8051F502-IMR Silicon Laboratories Inc, C8051F502-IMR Datasheet - Page 304

• Manufacturer Part Number: C8051F502-IMR
• Description: MCU 8-Bit C8051F50x 8051 CISC 64KB Flash 2.5V/3.3V/5V 32-Pin QFN EP T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of C8051F502-IMR

• Package: 32QFN EP
• Device Core: 8051
• Family Name: C8051F50x
• Maximum Speed: 50 MHz
• Ram Size: 4.25 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/UART
• On-chip Adc: 32-chx12-bit
• Operating Temperature: -40 to 125 °C
• Number Of Timers: 4

C8051F50x/F51x
SFR Definition 27.5. PCA0L: PCA Counter/Timer Low Byte
SFR Address = 0xF9; SFR Page = 0x00
SFR Definition 27.6. PCA0H: PCA Counter/Timer High Byte
SFR Address = 0xFA; SFR Page = 0x00
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Note: When the WDTE bit is set to 1, the PCA0L register cannot be modified by software. To change the contents of
Note: When the WDTE bit is set to 1, the PCA0H register cannot be modified by software. To change the contents of
Name
Reset
Name
Reset
7:0
7:0 PCA0[15:8] PCA Counter/Timer High Byte.
Bit
Bit
Type
Type
Bit
Bit
the PCA0L register, the Watchdog Timer must first be disabled.
the PCA0H register, the Watchdog Timer must first be disabled.
PCA0[7:0] PCA Counter/Timer Low Byte.
Name
Name
R/W
R/W
7
0
7
0
The PCA0L register holds the low byte (LSB) of the 16-bit PCA Counter/Timer.
The PCA0H register holds the high byte (MSB) of the 16-bit PCA Counter/Timer.
Reads of this register will read the contents of a “snapshot” register, whose contents
are updated only when the contents of PCA0L are read (see Section 27.1).
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
R/W
Rev. 1.2
4
0
4
0
PCA0[15:8]
PCA0[7:0]
Function
Function
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
0
R/W
R/W
1
0
1
0
R/W
R/W
0
0
0
0