AT91SAM9RL64-CU Atmel, AT91SAM9RL64-CU Datasheet - Page 829
![IC ARM9 MCU 217-LFBGA](/photos/12/13/121366/217-lfbga_sml.jpg)
AT91SAM9RL64-CU
Manufacturer Part Number
AT91SAM9RL64-CU
Description
IC ARM9 MCU 217-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM9RL64-CU
Core Processor
ARM9
Core Size
16/32-Bit
Speed
240MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, LCD, POR, PWM, WDT
Number Of I /o
118
Program Memory Size
32KB (32K x 8)
Program Memory Type
ROM
Ram Size
72K x 8
Voltage - Supply (vcc/vdd)
1.08 V ~ 1.32 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
217-LFBGA
Processor Series
AT91SAMx
Core
ARM926EJ-S
Data Bus Width
32 bit
Data Ram Size
64 KB
Interface Type
2-Wire, SPI, SSC, USART
Maximum Clock Frequency
240 MHz
Number Of Programmable I/os
118
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 6 Channel
Controller Family/series
AT91SAM9xxx
No. Of I/o's
118
Ram Memory Size
64KB
Cpu Speed
240MHz
No. Of Timers
1
Rohs Compliant
Yes
Package
217LFBGA
Device Core
ARM926EJ-S
Family Name
91S
Maximum Speed
240 MHz
Operating Supply Voltage
1.8|3.3 V
For Use With
AT91SAM9RL-EK - KIT EVAL FOR AT91SAM9RLAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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43.5.5
43.6
43.6.1
6289C–ATARM–28-May-09
Touch Screen
Sample and Hold Time
Resistive Touch Screen Principles
Mode
conversion of the sequence.
The field STARTUP can define a Startup Time between 8 and 1024 ADC Clock cycles by steps
of 8.
The user must assure that ADC Startup Time given in the section “Electrical Characteristics” is
covered by this wait time.
In the same way, a minimal Sample and Hold Time is necessary for the TSADCC to guarantee
the best converted final value between selection of two channels. This time depends on the input
impedance of the analog input, but also on the output impedance of the driver providing the sig-
nal to the analog input, as there is no input buffer amplifier.
The Sample and Hold time has to be programmed through the bitfields SHTIM in the
Mode Register”
The field SHTIM defines the number of ADC Clock cycles for an analog input, while the field
TSSHTIM defines the number of ADC Clock cycles for a Touch Screen input.
These both fields can define a Sample and Hold time between 1 and 16 ADC Clock cycles.
The field TSSHTIM defines also the time the power switches of the Touch Screen are closed
when the TSADCC performs a conversion for the Touch Screen.
A resistive touch screen is based on two resistive films, each one being fitted with a pair of elec-
trodes, placed at the top and bottom on one film, and on the right and left on the other. Between
the two, there is a layer that acts as an insulator, but also enables contact when you press the
screen. This is illustrated in
Register”, which defines how many ADC Clock cycles to wait before performing the first
and TSSHTIM in the
Figure
AT91SAM9R64/RL64 Preliminary
43-2.
“TSADCC Touch Screen
Register”.
“TSADCC
829
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