C8051F564-IQ Silicon Laboratories Inc, C8051F564-IQ Datasheet - Page 228
![IC 8051 MCU 16K FLASH 32-QFP](/photos/12/16/121657/c8051f564-iq_sml.jpg)
C8051F564-IQ
Manufacturer Part Number
C8051F564-IQ
Description
IC 8051 MCU 16K FLASH 32-QFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F56xr
Specifications of C8051F564-IQ
Program Memory Type
FLASH
Program Memory Size
16KB (16K x 8)
Package / Case
32-QFP
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), CAN, LIN, SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Ram Size
2.25K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.25 V
Data Converters
A/D 25x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Processor Series
C8051F5x
Core
8051
Data Bus Width
8 bit
Data Ram Size
2304 B
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
25
Operating Supply Voltage
1.8 V to 5.25 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F560DK
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
336-1691 - KIT DEVELOPMENT FOR C8051F560
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1702
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F564-IQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F564-IQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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C8051F55x/56x/57x
22.5.2. Read Sequence (Master)
During a read sequence, an SMBus master reads data from a slave device. The master in this transfer will
be a transmitter during the address byte, and a receiver during all data bytes. The SMBus interface gener-
ates the START condition and transmits the first byte containing the address of the target slave and the
data direction bit. In this case the data direction bit (R/W) will be logic 1 (READ). Serial data is then
received from the slave on SDA while the SMBus outputs the serial clock. The slave transmits one or more
bytes of serial data. An interrupt is generated after each received byte.
Software must write the ACK bit at that time to ACK or NACK the received byte. Writing a 1 to the ACK bit
generates an ACK; writing a 0 generates a NACK. Software should write a 0 to the ACK bit for the last data
transfer, to transmit a NACK. The interface exits Master Receiver Mode after the STO bit is set and a
STOP is generated. The interface will switch to Master Transmitter Mode if SMB0DAT is written while an
active Master Receiver. Figure 22.6 shows a typical master read sequence. Two received data bytes are
shown, though any number of bytes may be received. Notice that the ‘data byte transferred’ interrupts
occur before the ACK cycle in this mode.
228
S
Received by SMBus
Interface
Transmitted by
SMBus Interface
SLA
Figure 22.6. Typical Master Read Sequence
R
A
Data Byte
Interrupts
Rev. 1.1
A
S = START
P = STOP
A = ACK
N = NACK
R = READ
SLA = Slave Address
Data Byte
N
P
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