AT90CAN128-16MU Atmel, AT90CAN128-16MU Datasheet - Page 34
![IC MCU AVR 128K FLASH 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90CAN128-16MU
Manufacturer Part Number
AT90CAN128-16MU
Description
IC MCU AVR 128K FLASH 64-QFN
Manufacturer
Atmel
Series
AVR® 90CANr
Specifications of AT90CAN128-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Processor Series
AT90CANx
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
2-Wire, JTAG, PS2, SPI, SRAM, USB
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
53
Number Of Timers
3
Operating Supply Voltage
1.8 V, 3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATDVK90CAN1, ATADAPCAN01
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
64QFN EP
Device Core
AVR
Family Name
90C
Maximum Speed
16 MHz
For Use With
ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATDVK90CAN1 - KIT DEV FOR AT90CAN128 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
12 000
Company:
Part Number:
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Manufacturer:
ATMEL
Quantity:
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Part Number:
AT90CAN128-16MU
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4.5.8
34
AT90CAN32/64/128
Using all Locations of External Memory Smaller than 64 KB
Table 4-5.
Since the external memory is mapped after the internal memory as shown in
external memory is not addressed when addressing the first “ISRAM size” bytes of data space. It
may appear that the first “ISRAM size” bytes of the external memory are inaccessible (external
memory addresses 0x0000 to “ISRAM end”). However, when connecting an external memory
smaller than 64 KB, for example 32 KB, these locations are easily accessed simply by address-
ing from address 0x8000 to “ISRAM end + 0x8000”. Since the External Memory Address bit A15
is not connected to the external memory, addresses 0x8000 to “ISRAM end + 0x8000” will
appear as addresses 0x0000 to “ISRAM end” for the external memory. Addressing above
address “ISRAM end + 0x8000” is not recommended, since this will address an external mem-
ory location that is already accessed by another (lower) address. To the Application software,
the external 32 KB memory will appear as one linear 32 KB address space from “XMem start” to
“XMem start + 0x8000”. This is illustrated in
Figure 4-10. Address Map with 32 KB External Memory
XMM2
0
0
0
0
1
1
1
1
XMM1
0
0
1
1
0
0
1
1
ISRAM end + 0x8000
XMem start + 0x8000
Port C Pins Released as Normal Port Pins when the External Memory is Enabled
XMM0
ISRAM end
XMem start
0
1
0
1
0
1
0
1
0x7FFF
0xFFFF
0x0000
0x8000
# Bits for External Memory Address
8 (Full External Memory Space)
7
6
5
4
3
2
No Address high bits
AVR Memory Map
External Memory
Internal Memory
(Unused)
Figure
4-10.
External 32K SRAM
None
Released Port Pins
PC7
PC7 .. PC6
PC7 .. PC5
PC7 .. PC4
PC7 .. PC3
PC7 .. PC2
Full Port C
(Size=0x8000)
0x0000
ISRAM end
XMem start
0x7FFF
Figure
7679H–CAN–08/08
4-4, the
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