I/O

is 0x00 (all inputs). The state of the data registers after RESET low is unknown (input state provided by external hardware).

The 8-bit width is the true size of the mapped location. This is independent of the address spacing, which is greater than 8-bits. When writing to any of the locations in the I/O address map, therefore, the bit-masking need only extend across 8 bits. Within a 16-bit accumulator, the desired bits should be right-justified. When reading from these locations to a 16-bit accumulator, the IN instruction automatically clears the extra bits in excess of 8. The desired bits in the result will be right-justified within the accumulator.

The following table shows the bit locations of the I/O port mapping:

 

 

(8-bit wide location)

 

 

 

 

 

 

07

06

05

04

03

02

01

00

 

 

 

 

 

 

 

 

 

 

 

A port data register . . . . . address 0x00

A7

A6

A5

A4

A3

A2

A1

A0

 

 

 

 

 

 

 

 

 

 

A port control register . . . address 0x04

 

C

C

C

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

B port data register . . . . . address 0x08

B7

B6

B5

B4

B3

B2

B1

B0

 

 

 

 

 

 

 

 

 

 

B port control register . . . address 0x0C

 

C

C

C

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

C port data register . . . . . address 0x10

C7

C6

C5

C4

C3

C2

C1

C0

 

 

 

 

 

 

 

 

 

 

C port control register . . . address 0x14

 

C

C

C

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

D port data register . . . . . address 0x18

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

D port control register² . . address 0x1C

 

C

C

C

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

E port data register . . . . . address 0x20

E7

E6

E5

E4

E3

E2

E1

E0

 

 

 

 

 

 

 

 

 

 

E port control register . . . address 0x24

 

C

C

C

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

 

 

A7, B7, C7, D7, E7

: data register

 

 

 

 

 

 

 

 

 

 

C

: control register (0 = IN, 1 = OUT)

 

 

 

 

 

0x00 : state of control register after RESET low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

²Ports D4 and D5 may be dedicated to the Comparator function, if the Comparator Enable bit is set. If so, then bits 4 and 5 of the D port Control register must be CLEAR. Please refer to Section 3.3, Comparator, for details.

Port D0 is connected to the branch condition COND1. Port D1 is connected to the branch condition COND2, assuming the comparator is disabled. Please refer to Section 3.1.4, Branch on D Port, (and to Section 3.3, Comparator) for more information. External interrupts can be caused by transitions on ports D2, D3, D4, and D5. The interrupts associated with the D port are supported whether those pins are programmed as inputs or as outputs.

Peripheral Functions

3-3

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Texas Instruments MSP50C614 manual Peripheral Functions
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MSP50C614 specifications

The Texas Instruments MSP50C614 is a microcontroller that belongs to the MSP430 family, renowned for its low power consumption and versatile functionality. Primarily designed for embedded applications, this microcontroller is favored in various industries, including consumer electronics, industrial automation, and healthcare devices.

One of the standout features of the MSP50C614 is its ultra-low power technology, which enables it to operate in various power modes. This makes it ideal for battery-powered applications, where energy efficiency is crucial. The MSP430 architecture allows for a flexible power management system, ensuring that energy is conserved while providing robust performance.

The MSP50C614 is equipped with a 16-bit RISC CPU that delivers high performance while maintaining low power usage. With a maximum clock frequency of 16 MHz, it can execute most instructions in a single cycle, resulting in swift operation and responsive performance. This microcontroller also comes with a generous flash memory capacity, allowing developers to store large amounts of code and data conveniently.

In terms of peripherals, the MSP50C614 is highly versatile. It features a range of digital and analog input/output options, including multiple timers, GPIO ports, and various communication interfaces like UART, SPI, and I2C. This extensive set of peripherals allows for seamless integration with other components and simplifies the design of complex systems.

The integrated 12-bit Analog-to-Digital Converter (ADC) stands out as a valuable characteristic of the MSP50C614. This feature enables the microcontroller to convert physical analog signals into digital data, making it particularly useful for sensing applications and real-time monitoring.

Another noteworthy technology employed in the MSP50C614 is its support for low-voltage operations. With a broad supply voltage range, this microcontroller can function efficiently in diverse environments and is suitable for low-power applications, enhancing its practicality.

Moreover, Texas Instruments provides software support in the form of Code Composer Studio and various libraries that make it easier for developers to program and utilize the MSP50C614 effectively.

In summary, the Texas Instruments MSP50C614 microcontroller is a powerful, low-power solution equipped with the features and technologies necessary for efficient operation in a wide array of applications. Its blend of performance, flexibility, and energy efficiency makes it a popular choice among engineers and designers looking to create innovative, sustainable designs in the rapidly evolving tech landscape.
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