AT90CAN128-15AZ Atmel, AT90CAN128-15AZ Datasheet - Page 259

• Manufacturer Part Number: AT90CAN128-15AZ
• Description: MCU AVR 128K FLASH 15MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® 90CANr

Specifications of AT90CAN128-15AZ

• Package / Case: 64-TQFP, 64-VQFP
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 53
• Eeprom Size: 4K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: CAN, I²C, SPI, UART/USART
• Core Size: 8-Bit
• Processor Series: AT90CANx
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: CAN, SPI, UART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 4
• Maximum Operating Temperature: + 125 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
• Cpu Family: 90C
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 53
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

19.10.11 CAN Timer Control Register - CANTCON
19.10.12 CAN Timer Registers - CANTIML and CANTIMH
7679H–CAN–08/08
• Bit 7– Reserved Bit
This bit is reserved for future use. For compatibility with future devices, it must be written to zero
when CANBT3 is written.
• Bit 6:4 – PHS22:0: Phase Segment 2
This phase is used to compensate for phase edge errors. This segment may be shortened by
the re-synchronization jump width. PHS2[2..0] shall be ≥1 and ≤PHS1[2..0] (c.f.
”CAN Bit Timing” on page 236
• Bit 3:1 – PHS12:0: Phase Segment 1
This phase is used to compensate for phase edge errors. This segment may be lengthened by
the re-synchronization jump width.
• Bit 0 – SMP: Sample Point(s)
This option allows to filter possible noise on TxCAN input pin.
‘SMP=1’ configuration is not compatible with ‘BRP[5:0]=0’ because TQ =
If BRP = 0, SMP must be cleared.
• Bit 7:0 – TPRSC7:0: CAN Timer Prescaler
Prescaler for the CAN timer upper counter range 0 to 255. It provides the clock to the CAN timer
if the CAN controller is enabled.
T
• Bits 15:0 - CANTIM15:0: CAN Timer Count
CAN timer counter range 0 to 65,535.
Initial Value
Read/Write
clk
Initial Value
Read/Write
Bit
Bit
CANTIM
Bit
– 0 - the sampling will occur once at the user configured sampling point - SP.
– 1 - with three-point sampling configuration the first sampling will occur two
clocks before the user configured sampling point - SP, again at one
before SP and finally at SP. Then the bit level will be determined by a majority vote of
the three samples.
CANTIM15 CANTIM14 CANTIM13 CANTIM12 CANTIM11 CANTIM10 CANTIM9 CANTIM8 CANTIMH
CANTIM7
=
T
TPRSC7
15
R
7
0
R/W
clk
7
0
IO
CANTIM6
x 8 x (CANTCON [7:0] + 1)
TPRSC6
14
R
6
0
R/W
6
0
CANTIM5
TPRSC5
and
R/W
13
R
5
0
5
0
Section 19.4.3 ”Baud Rate” on page
CANTIM4
Tphs2 = Tscl x (PHS2 [2:0] + 1)
Tphs1 = Tscl x (PHS1 [2:0] + 1)
TPRSC4
R/W
12
R
4
0
4
0
TPRSC3
CANTIM3
R/W
3
0
11
R
3
0
TPRSC2
CANTIM2 CANTIM1 CANTIM0 CANTIML
R/W
2
0
10
R
2
0
AT90CAN32/64/128
TRPSC1
R/W
1
0
R
1
9
0
TPRSC0
242).
R/W
T
0
0
R
clk
0
8
0
T
clk
IO
CANTCON
.
IO
Section 19.2.3
clock
T
clk
IO
259