AT90S8535-8AI Atmel, AT90S8535-8AI Datasheet - Page 85

• Manufacturer Part Number: AT90S8535-8AI
• Description: IC MCU 8K 8MHZ A/D IT 44TQFP
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S8535-8AI

• 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
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Alternate Functions of Port C
Port C Schematics
1041H–11/01
When the AS2 bit in ASSR is set (one) to enable asynchronous clocking of
Timer/Counter2, pins PC6 and PC7 are disconnected from the port. In this mode, a
crystal oscillator is connected to the pins and the pins cannot be used as I/O pins.
Note that all port pins are synchronized. The synchronization latch is, however, not
shown in the figure.
Figure 58. Port C Schematic Diagram (Pins PC0 - PC5)
Figure 59. Port C Schematic Diagram (Pins PC6)
WP:
WD:
RL:
RP:
RD:
AS2:
WRITE PORTC
WRITE DDRC
READ PORTC LATCH
READ PORTC PIN
READ DDRC
ASYNCH SELECT T/C2
PCn
PC6
MOS
PULL-
UP
WP:
WD:
RL:
RP:
RD:
n:
MOS
PULL-
UP
WRITE PORTC
WRITE DDRC
READ PORTC LATCH
READ PORTC PIN
READ DDRC
0-5
RL
RP
RL
RP
AT90S/LS8535
Q
Q
PORTCn
RESET
RESET
DDCn
Q
Q
WD
WP
RD
PORTC6
R
C
R
C
RESET
RESET
DDC6
RD
WD
WP
R
C
R
C
D
D
D
D
AS2
T/C2 OSC
AMP INPUT
85