16/32-Bit Microcontroller. AT91M40400 Datasheet

AT91M40400 Datasheet PDF, Equivalent


Part Number

AT91M40400

Description

16/32-Bit Microcontroller

Manufacture

ATMEL Corporation

Total Page 7 Pages
PDF Download
Download AT91M40400 Datasheet PDF


AT91M40400 Datasheet
Features
Incorporates the ARM7TDMI ARM Thumb processor
– High-performance 32-bit RISC architecture
– High-density 16-bit instruction set
– Leader in MIPS/Watt
– Embedded ICE In Circuit Emulation
4K bytes internal RAM
Fully programmable External Bus Interface (EBI)
– Maximum external address space of 64M bytes
– Up to eight chip selects
– Software programmable 8/16-bit external databus
Eight-level priority, individually maskable, vectored interrupt controller
– Four External interrupts, including a high priority low latency interrupt request
32 Programmable I/O lines
Three-channel 16-bit timer/counter
– Three external clock inputs
– Two multi-purpose I/O pins per channel
Two USARTs
– Two dedicated Peripheral Data Controller (PDC) channels per USART
Programmable watchdog timer
Low-power idle and power-down modes
Fully static operation: 0 Hz to 33 MHz
2.7V to 3.6V operating range
Available in a 100-lead TQFP package
Description
The AT91M40400 is a member of the Atmel AT91 16/32-bit Microcontroller family
which is based on the ARM7TDMI embedded processor. This processor has a high-
performance 32-bit RISC architecture with a high-density 16-bit instruction set and
very low power consumption. In addition, a large number of internally banked registers
result in very fast exception handling, making the device ideal for real-time control
applications. The AT91 ARM-based MCU family also features Atmel’s high-density,
nonvolatile memory technology. The on-chip Flash program memory is in-system pro-
grammable.
The AT91M40400 has a direct connection to off-chip memory, including Flash,
through the External Bus Interface.
The device is manufactured using Atmel’s high-density CMOS technology. By com-
bining the ARM7TDMI microcontroller core with an on-chip RAM and a wide range of
peripheral functions on a monolithic chip, the Atmel AT91M40400 is a powerful micro-
controller that provides a flexible, cost-effective solution to many compute-intensive
embedded control applications.
16/32-Bit
Microcontroller
AT91M40400
Summary
Full datasheet (lit# 0768B)
also available by e-mailing
literature@atmel.com
Rev. 0768BS–08/98
1

AT91M40400 Datasheet
Pin Configuration
Figure 1. AT91M40400 Pinout (Top View)
A0/NLB
GND
A1
A2
A3
A4
A5
A6
A7
VDD
A8
A9
A10
A11
A12
A13
A14
GND
GND
A15
A16
A17
A18
A19
P28/A20/CS7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
AT91M40400
100-Lead TQFP
75 P21/TXD1/NTRI
74 P20/SCK1
73 P19
72 P18
71 P17
70 P16
69 P15/RXD0
68 P14/TXD0
67 P13/SCK0
66 P12/FIQ
65 GND
64 P11/IRQ2
63 P10/IRQ1
62 VDD
61 VDD
60 P9/IRQ0
59 P8/TIOB2
58 P7/TIOA2
57 P6/TCLK2
56 P5/TIOB1
55 P4/TIOA1
54 P3/TCLK1
53 GND
52 GND
51 P2/TIOB0
2 AT91M40400


Features Datasheet pdf Features • Incorporates the ARM7TDMI ARM Thumb processor – High-perform ance 32-bit RISC architecture – High- density 16-bit instruction set – Lead er in MIPS/Watt – Embedded ICE In Cir cuit Emulation 4K bytes internal RAM Fu lly programmable External Bus Interface (EBI) – Maximum external address spa ce of 64M bytes – Up to eight chip se lects – Software programmable 8/16-bi t external databus Eight-level priority , individually maskable, vectored inter rupt controller – Four External inter rupts, including a high priority low la tency interrupt request 32 Programmable I/O lines Three-channel 16-bit timer/c ounter – Three external clock inputs – Two multi-purpose I/O pins per chan nel Two USARTs – Two dedicated Periph eral Data Controller (PDC) channels per USART Programmable watchdog timer Low- power idle and power-down modes Fully s tatic operation: 0 Hz to 33 MHz 2.7V to 3.6V operating range Available in a 10 0-lead TQFP package • • • • • • • • • • • 16/32-Bit Microcontroller AT91M40400 Summary.
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