ATMEGA48PA-PN Atmel, ATMEGA48PA-PN Datasheet - Page 312
ATMEGA48PA-PN
Manufacturer Part Number
ATMEGA48PA-PN
Description
MCU AVR 4KB FLASH 20MHZ 28PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA48PA-AN.pdf
(448 pages)
Specifications of ATMEGA48PA-PN
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
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 27-8. Serial Programming Instruction example
27.8.4
8161D–AVR–10/09
Byte 1
SPI Serial Programming Characteristics
Load Program Memory Page (High/Low Byte)/
Load EEPROM Memory Page (page access)
Bit 15 B
Byte 2
Adr M M S S B
A
Figure 27-9. Serial Programming Waveforms
For characteristics of the SPI module see “SPI Timing Characteristics” on page 319.
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
Byte 3
Adr LSB
Page Offset
SAMPLE
(MOSI)
(MISO)
0
(SCK)
Serial Programming Instruction
Byte 4
Program Memory/
EEPROM Memory
MSB
MSB
Page Buffer
Page N-1
Page 0
Page 1
Page 2
ATmega48PA/88PA/168PA/328P
Byte 1
Page Number
Bit 15 B
Write Program Memory Page/
Write EEPROM Memory Page
Byte 2
Adr MSB
Byte 3
A A dr r L L SB B
0
Byte 4
LSB
LSB
312
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