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It requires a single wire and specialized electronics in the system being debugged. It appears in many Freescale Semiconductor products. Background commands are categorized into two types: Non-intrusive commands and Active background commands. Non-intrusive commands can be issued while the user program is running, which include memory access ...
1-Wire is a wired half-duplex serial bus designed by Dallas Semiconductor that provides low-speed (16.3 kbit/s [1]) data communication and supply voltage over a single conductor. [ 2 ] 1-Wire is similar in concept to I 2 C , but with lower data rates and longer range.
debugWIRE is activated by setting (programming to zero) of the fuse DWEN (debugWIRE enable), normally located in the high fuse byte. After this action the /RESET pin function isn't available anymore and the ISP protocol cannot be used. debugWIRE can be disabled with any of the mentioned debuggers by sending a special reset command that disables temporarily the debugWIRE function and reenables ...
The STM32 is a family of microcontroller ICs based on various 32-bit RISC ARM Cortex-M cores. [1] STMicroelectronics licenses the ARM Processor IP from ARM Holdings . The ARM core designs have numerous configurable options, and ST chooses the individual configuration to use for each design.
It is sometimes called a four-wire serial bus to contrast with three-wire variants which are half duplex, and with the two-wire I²C and 1-Wire serial buses. Typical applications include interfacing microcontrollers with peripheral chips for Secure Digital cards, liquid crystal displays , analog-to-digital and digital-to-analog converters ...
Reduced pin count JTAG uses only two wires, a clock wire and a data wire. This is defined as part of the IEEE 1149.7 standard. [8] The connector pins are: TMSC (Test Serial Data) TCK (Test Clock) It is called cJTAG for compact JTAG. The two-wire interface reduced pressure on the number of pins, and devices can be connected in a star topology. [9]
Stop (logic high (1)): the next one or two bits are always in the mark (logic high, i.e., 1) condition and called the stop bit(s). They signal to the receiver that the character is complete. Since the start bit is logic low (0) and the stop bit is logic high (1) there are always at least two guaranteed signal changes between characters.
1.1 All outputs (D 2) are set to a high level, all pull-downs are turned off 1.2 The first SNPD node is selected. It is identified by having the input D 1 low (hardwired). 1.3 The selected node takes the address from the LIN configuration message 1.4 The detected node turns on the pull-down at the output D 2. 2 Subsequent auto-addressing LIN ...