ATMEGA8535L-8AC Atmel, ATMEGA8535L-8AC Datasheet - Page 258

• Manufacturer Part Number: ATMEGA8535L-8AC
• Description: IC AVR MCU 8K LV 8MHZ COM 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8535L-8AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

External Clock Drive
Waveforms
External Clock Drive
258
ATmega8535(L)
Figure 126. External Clock Drive Waveforms
Table 110. External Clock Drive
Table 111. External RC Oscillator, Typical Frequencies
Notes:
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
1. R should be in the range 3 kΩ - 100 kΩ, and C should be at least 20 pF. The C values
2. The frequency will vary with package type and board layout.
V
IL1
given in the table includes pin capacitance. This will vary with package type.
R [kΩ]
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from
one clock cycle to the
next
V
33
10
IH1
(1)
V
CC
Min
125
50
50
0
= 2.7V to
C [pF]
22
22
Max
1.6
1.6
5.5
8
2
V
V
62.5
CC
Min
25
25
0
= 4.5V to
Max
2.0 MHz
650 kHz
0.5
0.5
5.5
16
2
f
2502K–AVR–10/06
(2)
V
Units
MHz
μs
μs
ns
ns
ns
%