M058LAN Nuvoton Technology Corporation of America, M058LAN Datasheet - Page 161
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M058LAN
Manufacturer Part Number
M058LAN
Description
IC MCU 32BIT 32KB FLASH 48LQFP
Manufacturer
Nuvoton Technology Corporation of America
Series
NuMicro M051™r
Specifications of M058LAN
Core Processor
ARM Cortex-M0
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
40
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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6.5.3.2 Data transfer on the I2C-bus
6.5.3.3 START or Repeated START signal
NuMicro M051
A master-transmitter addressing a slave receiver with a 7-bit address
The transfer direction is not changed
A master reads a slave immediately after the first byte (address)
The transfer direction is changed
When the bus is free/idle, meaning no master device is engaging the bus (both SCL and SDA
lines are high), a master can initiate a transfer by sending a START signal. A START signal,
usually referred to as the S-bit, is defined as a HIGH to LOW transition on the SDA line while SCL
is HIGH. The START signal denotes the beginning of a new data transfer.
A Repeated START (Sr) is no STOP signal between two START signals. The master uses this
method to communicate with another slave or the same slave in a different transfer direction (e.g.
from writing to a device to reading from a device) without releasing the bus.
STOP signal
The master can terminate the communication by generating a STOP signal. A STOP signal,
Figure 6.5-3 Master Transmits Data to Slave
Figure 6.5-4 Master Reads Data from Slave
™
Series Technical Reference Manual
- 161 -
Publication Release Date: Sept 14, 2010
Revision V1.2
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