AT91C140 datasheet(10/174 Pages) ATMEL

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AT91C140 Datasheet(PDF) 10 Page - ATMEL Corporation

Part #	AT91C140

Description	AT91 ARM Thumb Microcontrollers

Download	174 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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10 / 174 page

6069C–ATARM–15-Sep-05

AT91C140

ARM7TDMI Core

The ARM7TDMI is a three-stage pipeline, 32-bit RISC processor. The processor architecture

is Von Neumann load/store architecture, characterized by a single data and address bus for

instructions and data. The CPU has two instruction sets: the ARM and the Thumb instruction

set. The ARM instruction set has 32-bit wide instructions and provides maximum performance.

Thumb instructions are 16-bit wide and give maximum code density.

Instructions operate on 8-bit, 16-bit and 32-bit data types.

The CPU has seven operating modes. Each operating mode has dedicated banked registers

for fast exception handling. The processor has a total of 37 32-bit registers, including six sta-

tus registers.

Power Supplies

The AT91C140 has three types of power supply pins:

• VDDCORE pins power the core, including the ARM7TDMI processor, the memories and

the peripherals; voltage is between 1.65V and 1.95V, 1.8V nominal.

• VDDIO pins power the I/O lines, including those of the External Bus Interface and those of

the peripherals; voltage is between 3V and 3.6V, 3.3V nominal.

• VDDOSC pins power the PLL and oscillator cells; voltage is between 1.65V and 1.95V,

1.8V nominal.

Ground pins are common to all power supplies.

Manufacturer	Part #	Datasheet	Description
ATMEL Corporation	AT91C140	3Mb / 171P	AT91 ARM Thumb Microcontrollers
ATMEL Corporation	AT91C140-CI	3Mb / 171P	AT91 ARM Thumb Microcontrollers

Manufacturer	Part #	Datasheet	Description
ATMEL Corporation	AT91M42800	335Kb / 20P	AT91 ARM Thumb Microcontrollers
	AT91M40400	1Mb / 116P	AT91 ARM Thumb Microcontrollers
	AT91SAM9260	910Kb / 45P	AT91 ARM Thumb Microcontrollers
	AT91FR40162	250Kb / 22P	AT91 ARM Thumb Microcontrollers
	AT91SAM9G20	12Mb / 832P	AT91 ARM Thumb Microcontrollers
	AT91SAM9G20	996Kb / 42P	AT91 ARM Thumb Microcontrollers
	AT91R40807	221Kb / 19P	AT91 ARM Thumb Microcontrollers
	AT91M40800	1Mb / 153P	AT91 ARM Thumb Microcontrollers
	AT91M42800A	2Mb / 224P	AT91 ARM Thumb Microcontrollers
	AT91SAM9XE128	1Mb / 48P	AT91 ARM Thumb Microcontrollers

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