M55800A Atmel Corporation, M55800A Datasheet - Page 49
M55800A
Manufacturer Part Number
M55800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M55800A.pdf
(29 pages)
4.M55800A.pdf
(256 pages)
5.M55800A.pdf
(28 pages)
Specifications of M55800A
Flash (kbytes)
0 Kbytes
Pin Count
176
Max. Operating Frequency
33 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
58
Ext Interrupts
58
Usb Speed
No
Usb Interface
No
Spi
1
Uart
3
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
72
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Self Program Memory
NO
External Bus Interface
1
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.3/5.0
Fpu
No
Mpu / Mmu
no / no
Timers
6
Output Compare Channels
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- M40800 PDF datasheet
- M40800 PDF datasheet #2
- M55800A PDF datasheet #3
- M55800A PDF datasheet #4
- M55800A PDF datasheet #5
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EBI Memory Control Register
Register Name: EBI_MCR
Access Type:
Reset Value:
Absolute Address:0xFFE00024
Offset:
• ALE: Address Line Enable
This field determines the number of valid address lines and the number of valid chip select lines.
• DRP: Data Read Protocol
1354D–ATARM–08/02
0
1
1
1
1
31
23
15
DRP
ALE
–
–
–
–
7
X
0
0
1
1
0
1
X
0
1
0
1
Read/Write
0
0x24
Valid Address Bits
A20, A21, A22, A23
A20, A21, A22
A20, A21
A20
None
Selected DRP
Standard read protocol for all external memory devices enabled
Early read protocol for all external memory devices enabled
30
22
14
–
–
–
6
–
29
21
13
–
–
–
5
–
Maximum Addressable Space
16M Bytes
8M Bytes
4M Bytes
2M Bytes
1M Byte
DRP
28
20
12
–
–
–
4
27
19
11
–
–
–
–
3
Valid Chip Select
None
CS4
CS4, CS5
CS4, CS5, CS6
CS4, CS5, CS6, CS7
26
18
10
–
–
–
2
EBI_DRP_STANDARD
AT91X40 Series
EBI_DRP_EARLY
Code Label
EBI_DRP
ALE
25
17
–
–
9
–
1
EBI_ALE_16M
EBI_ALE_8M
EBI_ALE_4M
EBI_ALE_2M
EBI_ALE_1M
Code Label
EBI_ALE
24
16
–
–
–
8
0
49
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