ATTINY43U-SUR Atmel, ATTINY43U-SUR Datasheet - Page 143

• Manufacturer Part Number: ATTINY43U-SUR
• Description: MCU AVR 4KB FLASH 8MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY43U-SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8048B–AVR–03/09
Figure 19-1. Parallel Programming
Table 19-10. Pin Name Mapping
Table 19-11. Pin Values Used to Enter Programming Mode
Programming Mode
Signal Name in
PAGEL/BS1
RDY/BSY
XA1/BS2
DATA I/O
XA0
WR
OE
PAGEL/BS1
XA1/BS2
XA0
WR
Pin
PB7-PB0
Name
PAGEL/BS1
PA0
PA1
PA2
PA3
PA5
PA6
Pin
RDY/BSY
XA1/BS2
+12 V
XA0
WR
OE
I/O
I/O
O
I
I
I
I
I
PA5
PA0
PA1
PA2
PA3
PA4
CLKI/PA6
RESET/PA7
GND
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
Function
Write Pulse (Active low).
CLKI Action Bit 0
CLKI 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).
Symbol
PB7 - PB0
VCC
+5V
DATA
Value
0
0
0
0
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