C8051F019 Silicon Laboratories Inc, C8051F019 Datasheet - Page 92
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C8051F019
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F019
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F019-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F019-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F019R
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
13.3.
Each MCU has four byte-wide, bi-directional parallel ports that can be used general purpose I/O. Each port is
accessed through a corresponding special function register (SFR) that is both byte addressable and bit addressable.
When writing to a port, the value written to the SFR is latched to maintain the output data value at each pin. When
reading, the logic levels of the port’s input pins are returned regardless of the XBRn settings (i.e. even when the pin
is assigned to another signal by the Crossbar, the Port Register can always still read its corresponding Port I/O pin).
The exception to this is the execution of the read-modify-write instructions. The read-modify-write instructions
when operating on a port SFR are the following: ANL, ORL, XRL, JBC, CPL, INC, DEC, DJNZ and MOV, CLR
or SET, when the destination is an individual bit in a port SFR. For these instructions, the value of the port register
(not the pin) is read, modified, and written back to the SFR.
13.4.
P2 and P3 are not pinned out on the C8051F019. These port registers are still available for software use in the
C8051F019. Whether used or not in software, it is recommended not to let these port drivers go to high impedance
state. This is prevented after reset by having the weak pull-ups enabled as described in the XBR2 register. It is
recommended that each output driver for ports not pinned out should be configured as push-pull using the
corresponding PRTnCF register. This will inhibit a high impedance state even if the weak pull-up is disabled.
Bits7-0: P0.[7:0]
Bits7-0: PRT0CF.[7:0]: Output Configuration Bits for P0.7-P0.0 (respectively)
P0.7
R/W
R/W
Bit7
Bit7
General Purpose Port I/O
Configuring Ports Which are not Pinned Out
(Write – Output appears on I/O pins per XBR0, XBR1, and XBR2 Registers)
0: Logic Low Output.
1: Logic High Output (high-impedance if corresponding PRT0CF.n bit = 0)
(Read – Regardless of XBR0, XBR1, and XBR2 Register settings).
0: P0.n pin is logic low.
1: P0.n pin is logic high.
0: Corresponding P0.n Output mode is Open-Drain.
1: Corresponding P0.n Output mode is Push-Pull.
(Note: When SDA, SCL, and RX appear on any of the P0 I/O, each are open-drain
P0.6
R/W
R/W
Bit6
Bit6
regardless of the value of PRT0CF).
Figure 13.7. PRT0CF: Port0 Configuration Register
P0.5
R/W
R/W
Bit5
Bit5
Figure 13.6. P0: Port0 Register
P0.4
R/W
R/W
Bit4
Bit4
Rev. 1.2
P0.3
R/W
R/W
Bit3
Bit3
P0.2
R/W
R/W
Bit2
Bit2
P0.1
R/W
R/W
Bit1
Bit1
C8051F018
C8051F019
(bit addressable)
P0.0
R/W
R/W
Bit0
Bit0
0x80
SFR Address:
SFR Address:
Reset Value
Reset Value
11111111
00000000
0xA4
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