M42800A Atmel Corporation, M42800A Datasheet - Page 45
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M42800A
Manufacturer Part Number
M42800A
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.M40800.pdf
(153 pages)
3.M42800A.pdf
(224 pages)
4.M42800A.pdf
(27 pages)
Specifications of M42800A
Flash (kbytes)
0 Kbytes
Pin Count
144
Max. Operating Frequency
33 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
54
Usb Speed
No
Usb Interface
No
Spi
2
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
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
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EBI User Interface
1354D–ATARM–08/02
The EBI is programmed using the registers listed in the table below. The Remap Control
Register (EBI_RCR) controls exit from Boot Mode (See “Boot on NCS0” on page 26.)
The Memory Control Register (EBI_MCR) is used to program the number of active chip
selects and data read protocol. Eight Chip Select Registers (EBI_CSR0 to EBI_CSR7)
are used to program the parameters for the individual external memories. Each
EBI_CSR must be programmed with a different base address, even for unused chip
selects.
Base Address: 0xFFE00000 (Code Label EBI_BASE)
Table 6. EBI Memory Map
Notes:
Offset
0x0C
0x1C
0x00
0x04
0x08
0x10
0x14
0x18
0x20
0x24
1. 8-bit boot (if BMS is detected high)
2. 16-bit boot (if BMS is detected low)
Register
Chip Select Register 0
Chip Select Register 1
Chip Select Register 2
Chip Select Register 3
Chip Select Register 4
Chip Select Register 5
Chip Select Register 6
Chip Select Register 7
Remap Control Register
Memory Control
Register
EBI_CSR0
EBI_CSR1
EBI_CSR2
EBI_CSR3
EBI_CSR4
EBI_CSR5
EBI_CSR6
EBI_CSR7
EBI_MCR
EBI_RCR
Name
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Write only
AT91X40 Series
Access
0x0000203D
0x0000203E
Reset State
0x10000000
0x20000000
0x30000000
0x40000000
0x50000000
0x60000000
0x70000000
–
0
(1)
(2)
45
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