ATTINY2313A-MUR Atmel, ATTINY2313A-MUR Datasheet - Page 182

• Manufacturer Part Number: ATTINY2313A-MUR
• Description: MCU AVR 2K FLASH 20MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313A-MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

20.5
20.5.1
182
Parallel Programming Parameters, Pin Mapping, and Commands
ATtiny2313A/4313
Signal Names
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATtiny2313A/4313. Pulses are assumed
to be at least 250 ns unless otherwise noted.
In this section, some pins of the ATtiny2313A/4313 are referenced by signal names describing
their functionality during parallel programming, see
Pins not described in the following table are referenced by pin names.
Figure 20-1. Parallel Programming
Table 20-9.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
Signal Name in
Programming
BS1/PAGEL
RDY/BSY
XA1/BS2
DATA I/O
Mode
XA0
WR
OE
Pin Name Mapping
PB7-0
Name
PD1
PD2
PD3
PD4
PD5
PD6
Pin
BS1/PAGEL
RDY/BSY
XA1/BS2
Table 20-11 on page
+12 V
XA0
WR
OE
I/O
I/O
O
I
I
I
I
I
Function
0: Device is busy programming,
1: Device is ready for new command.
Output Enable (Active low).
Write Pulse (Active low).
Byte Select 1 (“0” selects low byte, “1” selects high byte).
Program Memory and EEPROM Data Page Load.
XTAL Action Bit 0
XTAL Action Bit 1.
Byte Select 2 (“0” selects low byte, “1” selects 2’nd high
byte).
Bi-directional Data bus (Output when OE is low).
PD1
PD2
PD3
PD4
PD5
PD6
RESET
XTAL1
GND
183.
PB7 - PB0
Figure 20-1
VCC
+5V
DATA I/O
and
Table 20-9 on page
8246A–AVR–11/09
182.