AT91R40807-33AI Atmel, AT91R40807-33AI Datasheet - Page 20
AT91R40807-33AI
Manufacturer Part Number
AT91R40807-33AI
Description
IC ARM7 MCU 176 TQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheets
1.AT91R40807-33AC.pdf
(19 pages)
2.AT91R40807-33AC.pdf
(20 pages)
3.AT91R40807-33AI.pdf
(153 pages)
Specifications of AT91R40807-33AI
Core Processor
ARM7
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
136K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91R40807-33AI
Manufacturer:
ATMEL
Quantity:
1 831
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External Bus Interface Pin Description
The following table shows how certain EBI signals are multiplexed:
Table 4. EBI Signals
20
Name
A0 - A23
D0 - D15
NCS0 - NCS3
CS4 - CS7
NRD
NWR0 - NWR1
NOE
NWE
NUB, NLB
NWAIT
Multiplexed Signals
A23 - A20
A0
NRD
NWR0
NWR1
AT91X40 Series
CS4 - CS7
NLB
NOE
NWE
NUB
Description
Address bus (output)
Data bus (input/output)
Active low chip selects (output)
Active high chip selects (output)
Read enable (output)
Lower and upper write enable (output)
Output enable (output)
Write enable (output)
Upper and lower byte select (output)
Wait request (input)
Functions
Allows from 4 to 8 chip select lines to be used
8- or 16-bit data bus
Byte write or byte select access
Byte write or byte select access
Byte write or byte select access
Output
Output
Output
Output
Output
Output
Output
Output
Type
Input
1354D–ATARM–08/02
I/O
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