AT91M40400 ATMEL Corporation, AT91M40400 Datasheet
AT91M40400
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AT91M40400 Summary of contents
Page 1
... 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. ...
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... Pin Configuration Figure 1. AT91M40400 Pinout (Top View) A0/NLB 1 GND VDD A10 13 A11 14 A12 15 A13 A14 17 GND 18 GND 19 A15 20 A16 21 A17 22 A18 23 A19 24 P28/A20/CS7 25 AT91M40400 2 AT91M40400 100-Lead TQFP 75 P21/TXD1/NTRI 74 P20/SCK1 73 P19 ...
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... Table 1. AT91M40400 Pin Description Module Name A0-A23 Address Bus D0-D15 Data Bus NCS0-NCS3 Chip Select CS4-CS7 Chip Select NWR0 Lower Byte 0 Write Signal NWR1 Upper Byte 1 Write Signal EBI NRD Read Signal NWE Write Enable NOE Output Enable NUB Upper Byte Select ...
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... Block Diagram Figure 2. AT91M40400 Block Diagram TMS TDO TDI TCK MCKI P25/MCKO P12/FIQ P9/IRQ0 P10/IRQ1 Interrupt Controller P11/IRQ2 P13/SCK0 P14/TXD0 P15/RXD0 P20/SCK1 P21/TXD1/NTRI P22/RXD1 P16 P17 P18 P19 P23 P24/BMS AT91M40400 4 Embedded ICE ARM7TDMI Core ASB RAM 4K bytes Clock ASB ...
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... Electrical characteristics are documented in a separate datasheet entitled “AT91M40400 Electrical and Mechanical Characteristics”. The ARM Standard In-Circuit-Emulation debug interface is supported via the ICE port of the AT91M40400 microcon- troller. (This is not a standard IEEE 1149.1 JTAG Boundary Scan interface) PDC: Peripheral Data Controller The AT91M40400 has a 4-channel PDC dedicated to the two on-chip USARTs ...
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... PIO: Parallel I/O Controller The AT91M40400 has 32 programmable I/O lines. Six pins on the AT91M40400 are dedicated as general purpose I/O pins (P16, P17, P18, P19, P23 and P24). Other I/O lines are multiplexed with an external signal of a peripheral to optimize the use of available package pins. The PIO con- ...
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... TC: Timer Counter The AT91M40400 features a Timer Counter block which includes three identical 16-bit timer counter channels. Each channel can be independently programmed to perform a wide range of functions including frequency measurement, event counting, interval measurement, pulse generation, delay timing and pulse width modulation. Each Timer Counter channel has 3 external clock inputs, 5 internal clock inputs, and 2 multi-purpose input/output sig- nals which can be configured by the user ...