M42800A Atmel Corporation, M42800A Datasheet - Page 163
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: 163 of 284
- Download datasheet (2Mb)
6.14
ARM DDI 0029G
CP
register
status
Single
register
ready
Single
register
not ready
n registers
(n>1)
ready
Coprocessor data transfer from memory to coprocessor
Cycles
1
2
1
2
•
b
b+1
1
2
•
n
n+1
Address
pc+8
alu
pc+12
pc+8
pc+8
pc+8
pc+8
alu
pc+12
pc+8
alu
alu+•
alu+•
alu+•
pc+12
For coprocessor transfer instructions from memory the coprocessor must commit to the
transfer only when it is ready to accept the data. When CPB goes LOW, the processor
produces the addresses and expects the coprocessor to take the data at sequential cycle
rates. The coprocessor is responsible for determining the number of words to be
transferred, and indicates the last transfer cycle by driving CPA and CPB HIGH.
The ARM7TDMI processor spends the first cycle (and any busy-wait cycles) generating
the transfer address, and updates the base address during the transfer cycles.
The cycle timings are listed in Table 6-17 where:
•
•
b represents the busy cycles
n represents the number of registers.
MAS
[1:0]
2
2
2
2
2
2
2
2
2
2
2
2
Copyright © 1994-2001. All rights reserved.
Table 6-17 Coprocessor data transfer instruction cycle operations
nRW
0
0
0
0
0
0
0
0
0
0
0
0
Data
(pc+8)
(alu)
(pc+8)
-
-
-
(alu)
(pc+8)
(alu)
(alu+•)
(alu+•)
(alu+•)
nMREQ
0
0
1
1
1
0
0
0
0
0
0
0
SEQ
0
0
0
0
0
0
0
0
1
1
1
0
nOPC
0
1
0
1
1
1
1
0
1
1
1
1
Instruction Cycle Timings
nCPI
0
1
0
0
0
0
1
0
1
1
1
1
CPA
0
1
0
0
0
0
1
0
0
0
0
1
CPB
0
1
1
1
1
0
1
0
0
0
0
1
6-21
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: