AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 122
AT91SAM7X128
Manufacturer Part Number
AT91SAM7X128
Description
MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
Manufacturer
Atmel
Datasheet
1.AT91SAM7X512-AU-999.pdf
(687 pages)
Specifications of AT91SAM7X128
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
Ram Size
32 KB
Program Memory Size
128 KB
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Program Memory Type
Flash
Number Of Programmable I/os
62
Interface Type
CAN/Ethernet/SPI/I2S/TWI/USART/USB
On-chip Adc
8-chx10-bit
Operating Temperature
-40 to 85 °C
Number Of Timers
3
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Part Number:
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Manufacturer:
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Quantity:
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Table 20-4.
20.2.4.2
122
Step
1
2
3
4
5
6
AT91SAM7X512/256/128 Preliminary
Programmer Action
Sets MODE and DATA signals
Clears NCMD signal
Waits for RDY low
Releases MODE and DATA signals
Sets NCMD signal
Waits for RDY high
Read Handshaking
Write Handshake
Figure 20-2. Parallel Programming Timing, Write Sequence
For details on the read handshaking sequence, refer to
Figure 20-3.
MODE[3:0]
DATA[15:0]
MODE[3:0]
DATA[15:0]
NVALID
NVALID
NCMD
NCMD
Parallel Programming Timing, Read Sequence
NOE
RDY
NOE
RDY
1
1
Waits for NCMD low
Latches MODE and DATA
Clears RDY signal
Executes command and polls NCMD high
Executes command and polls NCMD high
Sets RDY
Device Action
2
2
Adress IN
ADDR
3
3
4
5
Z
6
Figure 20-3
4
7
Data OUT
8
5
9
and
Data I/O
Input
Input
Input
Input
Input
Input
10
11
Table
X
12
6120H–ATARM–17-Feb-09
20-5.
13
IN
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