AT90CAN64 Atmel Corporation, AT90CAN64 Datasheet - Page 52

• Manufacturer Part Number: AT90CAN64
• Manufacturer: Atmel Corporation

Specifications of AT90CAN64

• Flash (kbytes): 64 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): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• 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

Table 7-1.
Note:
7.1.3
52
Symbol
V
V
V
V
t
CCRR
RST
POT
POR
RST
1. The Power-on Reset will not work unless the supply voltage has been below V
AT90CAN32/64/128
Power-on Reset
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Minimum pulse width on RESET Pin
Vcc Start Voltage to ensure
Vcc Rise Rate to ensure
RESET Pin Threshold Voltage
Reset Characteristics
internal Power-on Reset signal
internal Power-on Reset signal
Figure 7-1.
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the start-up Reset, as well as to detect a failure in supply
voltage.
A Power-on Reset (POR) circuit ensures that the device is properly reset from Power-on if V
started from V
voltage invokes the delay counter, which determines how long the device is kept in RESET after
BODLEVEL [2..0]
Table
Reset Logic
POR
with a rise rate upper than V
7-1. The POR is activated whenever V
Pull-up Resistor
(1)
JTAG Reset
Register
Spike
Filter
Vcc = 5 V, temperature = 25 °C
CKSEL[3:0]
Power-on Reset
Reset Circuit
SUT[1:0]
Condition
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CCRR
CK
Register (MCUSR)
. Reaching the Power-on Reset threshold
MCU Status
DATA BUS
POT
Delay Counters
(falling)
CC
- 0.05
is below the detection level. The
Min.
Vcc
0.3
0.2
GND
Typ.
400
1.4
1.3
TIMEOUT
+ 0.05
Max.
0.85
Vcc
2.3
2.3
7679H–CAN–08/08
Units
V/ms
ns
V
V
V
V
CC