AT90CAN32 Automotive Atmel Corporation, AT90CAN32 Automotive Datasheet - Page 13
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AT90CAN32 Automotive
Manufacturer Part Number
AT90CAN32 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(431 pages)
2.AT90CAN128_AUTOMOTIVE.pdf
(16 pages)
3.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
Specifications of AT90CAN32 Automotive
Flash (kbytes)
32 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
8
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Can
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
8
Input Capture Channels
2
Pwm Channels
7
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
- AT90CAN128_AUTOMOTIVE PDF datasheet
- AT90CAN128_AUTOMOTIVE PDF datasheet #2
- AT90CAN128_AUTOMOTIVE PDF datasheet #3
- Current page: 13 of 431
- Download datasheet (6Mb)
3.5.2
7682C–AUTO–04/08
Extended Z-pointer Register for ELPM/SPM – RAMPZ
Figure 3-3.
In the different addressing modes these address registers have functions as fixed displacement,
automatic increment, and automatic decrement (see the instruction set reference for details).
• Bits 7..1 – Res: Reserved Bits
These bits are reserved for future use and will always read as zero. For compatibility with future
devices, be sure to write to write them to zero.
• Bit 0 – RAMPZ0: Extended RAM Page Z-pointer
The RAMPZ Register is normally used to select which 64K RAM Page is accessed by the Z-
pointer. As the AT90CAN32/64/128 does not support more than 64K of SRAM memory, this reg-
ister is used only to select which page in the program memory is accessed when the ELPM/SPM
instruction is used. The different settings of the RAMPZ0 bit have the following effects:
Figure 3-4.
Note:
RAMPZ0 = 0: Program memory address 0x0000 - 0x7FFF (lower 64K bytes) is accessed by
RAMPZ0 = 1: Program memory address 0x8000 - 0xFFFF (higher 64K bytes) is accessed by
Bit
Read/Write
Initial Value
X-register
Y-register
Z-register
Bit (Individually)
Bit (Z-pointer)
– AT90CAN32 and AT90CAN64: RAMPZ0 exists as register bit but it is not used for
– AT90CAN128: RAMPZ0 exists as register bit and it is used for program memory
program memory addressing.
addressing.
LPM (different of ELPM) is never affected by the RAMPZ setting.
ELPM/SPM
ELPM/SPM
The X-, Y-, and Z-registers
The Z-pointer used by ELPM and SPM
23
7
R
7
–
0
15
7
R27 (0x1B)
15
7
R29 (0x1D)
15
7
R31 (0x1F)
RAMPZ
R
6
–
0
R
5
–
0
XH
YH
ZH
0
16 15
0
R
4
–
0
7
R
3
–
0
0
0
ZH
7
R26 (0x1A)
7
R28 (0x1C)
7
R30 (0x1E)
R
2
–
0
AT90CAN32/64/128
R
0
8
1
–
0
XL
YL
ZL
7
7
RAMPZ0
0
R/W
0
0
ZL
RAMPZ
0
0
0
0
0
0
0
13
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