M42800A Atmel Corporation, M42800A Datasheet - Page 113
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
- Current page: 113 of 284
- Download datasheet (2Mb)
4.4.5
ARM DDI 0029G
Coprocessor register transfer instructions
Execute stage
Decode stage
It is essential that any action taken by the coprocessor while it is busy-waiting is
idempotent. This means that the actions taken by the coprocessor must not corrupt the
state of the coprocessor, and must be repeatable with identical results. The coprocessor
can only change its own state once the instruction has been executed.
The ARM7TDMI processor usually returns from processing the interrupt to retry the
coprocessor instruction. Other coprocessor instructions can be executed before the
interrupted instruction is executed again.
The coprocessor register transfer instructions, MCR and MRC, are used to transfer data
between a register in the ARM7TDMI processor register bank and a register in the
coprocessor register bank. An example sequence for a coprocessor register transfer is
shown in Figure 4-2.
Fetch stage
D[31:0]
MCLK
nCPI
CPA
CPB
Caution
Copyright © 1994-2001. All rights reserved.
ADD
ADD
SUB
ADD
SUB
Figure 4-2 Coprocessor register transfer sequence
MCR
ADD
SUB
MCR
MCR
SUB
TST
TST
SUB
MCR
SUB
TST
DATA
Coprocessor Interface
SUB
TST
INSTR
SUB
4-9
Related parts for M42800A
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: