AT90CAN32 Automotive Atmel Corporation, AT90CAN32 Automotive Datasheet - Page 52

• Manufacturer Part Number: AT90CAN32 Automotive
• Manufacturer: Atmel Corporation

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

Table 7-1.
Notes:
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
2. Data from design simulation.
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
V
V
RESET Pin Threshold Voltage
CC
CC
Reset Characteristics
Start Voltage to ensure
Rise Rate to ensure
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
If these conditions are not met, use of an external reset is recommended.
Table
Reset Logic
POR
with a rise rate upper than V
7-1. The POR is activated whenever V
(1)
Vcc = 5 V, temperature = 25 ° C
Condition
CCRR
. Reaching the Power-on Reset threshold
POR
.
CC
0.3
-0.05
Min.
V
is below the detection level. The
0.2
CC
(2)
GND
Typ.
400
1.4
1.3
(2)
0.05
Max.
0.85
V
7682C–AUTO–04/08
2.3
2.3
CC
(2)
Units
V/ms
ns
V
V
V
V
CC