C8051F019 Silicon Laboratories Inc, C8051F019 Datasheet - Page 73

• Manufacturer Part Number: C8051F019
• Description: IC 8051 MCU 16K FLASH 48TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F018r

Specifications of C8051F019

• 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: 16
• 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: 48-TQFP, 48-VQFP
• 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: 16
• Number Of Timers: 16 bit
• Operating Supply Voltage: 2.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

73
Bit7:
Bit6:
Bits5-4: UNUSED. Read = 00b, Write = don’t care.
Bits3-0: FLASCL: Flash Memory Timing Prescaler.
C8051F018
C8051F019
FOSE
R/W
Bit7
0: Flash One-shot timer disabled.
1: Flash One-shot timer enabled
0: Flash reads per one-shot timer
1: Flash always in read mode
This register specifies the prescaler value for a given system clock required to generate the
correct timing for Flash write/erase operations. If the prescaler is set to 1111b, Flash
write/erase operations are disabled.
0000: System Clock < 50kHz
0001: 50kHz  System Clock < 100kHz
0010: 100kHz  System Clock < 200kHz
0011: 200kHz  System Clock < 400kHz
0100: 400kHz  System Clock < 800kHz
0101: 800kHz  System Clock < 1.6MHz
0110: 1.6MHz  System Clock < 3.2MHz
0111: 3.2MHz  System Clock < 6.4MHz
1000: 6.4MHz  System Clock < 12.8MHz
1001: 12.8MHz  System Clock < 25.6MHz
1010: 25.6MHz  System Clock < 51.2MHz *
1011, 1100, 1101, 1110: Reserved Values
1111: Flash Memory Write/Erase Disabled
The prescaler value is the smallest value satisfying the following equation:
FLASCL > log
* For test purposes. The C8051F018/9 is not guaranteed for operation over 25MHz.
FOSE: Flash One-Shot Timer Enable
FRAE: Flash Read Always Enable
FRAE
R/W
Bit6
2
(System Clock / 50kHz)
Figure 9.4. FLSCL: Flash Memory Timing Prescaler
R/W
Bit5
-
R/W
Bit4
-
Rev. 1.2
R/W
Bit3
R/W
Bit2
FLASCL
R/W
Bit1
R/W
Bit0
SFR Address:
Reset Value
10001111
0xB6