AT90S8515A-8AC Atmel, AT90S8515A-8AC Datasheet - Page 34
![IC MCU 8K FLSH 8MHZ 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
AT90S8515A-8AC
Manufacturer Part Number
AT90S8515A-8AC
Description
IC MCU 8K FLSH 8MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® 90Sr
Datasheets
1.AT90S8515-4AC.pdf
(112 pages)
2.AT90S8515-4AC.pdf
(4 pages)
3.AT90S8515-4AC.pdf
(4 pages)
Specifications of AT90S8515A-8AC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
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)
4 V ~ 6 V
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
Data Converters
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- Download datasheet (3Mb)
Timer Counter0 – TCNT0
16-bit Timer/Counter1
34
AT90S8515
The Stop condition provides a Timer Enable/Disable function. The CK down divided
modes are scaled directly from the CK oscillator clock. If the external pin modes are
used for Timer/Counter0, transitions on PB0/(T0) will clock the counter even if the pin is
configured as an output. This feature can give the user software control of the counting.
The Timer/Counter0 is realized as an up-counter with read and write access. If the
Timer/Counter0 is written and a clock source is present, the Timer/Counter0 continues
counting in the clock cycle following the write operation.
Figure 30 shows the block diagram for Timer/Counter1.
Figure 30. Timer/Counter1 Block Diagram
The 16-bit Timer/Counter1 can select clock source from CK, prescaled CK or an exter-
nal pin. In addition, it can be stopped as described in the specification for the
Timer/Counter1 Control Registers (TCCR1A and TCCR1B). The different status flags
(overflow, compare match and capture event) are found in the Timer/Counter Interrupt
Flag Register (TIFR). Control signals are found in the Timer/Counter1 Control Registers
Bit
$32 ($52)
Read/Write
Initial Value
MSB
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
LSB
R/W
0
0
0841G–09/01
TCNT0
T1
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