ATTINY461-20SUR Atmel, ATTINY461-20SUR Datasheet - Page 178

• Manufacturer Part Number: ATTINY461-20SUR
• Description: MCU AVR 4KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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ATtiny261/461/861
Figure 18-3. Parallel Programming.
Table 18-12. Pin Name Mapping
Programming Mode
Signal Name in
PAGEL/BS1
RDY/BSY
DATA I/O
XA1/BS2
XA0
WR
OE
PAGEL/BS1
RDY/BSY
XA1/BS2
+12 V
XA0
WR
OE
PA7-PA0
Name
PB0
PB1
PB2
PB3
PB5
PB6
Pin
I/O
I/O
O
I
I
I
I
I
PB0
PB1
PB2
PB3
XTAL1/PB4
PB5
PB6
RESET
GND
Function
Write Pulse (Active low).
XTAL Action Bit 0
XTAL Action Bit 1. Byte Select 2 (“0” selects low byte, “1”
selects 2’nd high byte).
Byte Select 1 (“0” selects low byte, “1” selects high byte).
Program Memory and EEPROM Data Page Load.
Output Enable (Active low).
0: Device is busy programming, 1: Device is ready for new
command.
Bi-directional Data bus (Output when OE is low).
PA7 - PA0
AVCC
VCC
+5V
+5V
DATA
2588E–AVR–08/10