ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 169
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATmega48 Automotive
Manufacturer Part Number
ATmega48 Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48 Automotive
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
256
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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21.6.2
Table 21-11. Serial Programming Instruction Set
7701E–AVR–02/11
Instruction/Operation
Programming Enable
Chip Erase (Program Memory/EEPROM)
Poll RDY/BSY
Load Instructions
Load Extended Address byte
Load Program Memory Page, High byte
Load Program Memory Page, Low byte
Load EEPROM Memory Page (page access)
Read Instructions
Read Program Memory, High byte
Read Program Memory, Low byte
Read EEPROM Memory
Read Lock bits
Read Signature Byte
Read Fuse bits
Read Fuse High bits
Read Extended Fuse Bits
Read Calibration Byte
Write Instructions
Write Program Memory Page
Write EEPROM Memory
Write EEPROM Memory Page (page access)
Write Lock bits
Serial Programming Instruction set
(6)
(1)
8. Power-off sequence (if needed):
Table 21-10. Minimum Wait Delay Before Writing the Next Flash or EEPROM Location
Table 21-11 on page 169
Symbol
t
t
t
t
WD_FLASH
WD_EEPROM
WD_ERASE
WD_FUSE
Set RESET to “1”.
Turn V
CC
power off.
Byte 1
$AC
$AC
$4D
$C1
$4C
$C0
$C2
$AC
$F0
$A0
$48
$40
$28
$20
$58
$30
$50
$58
$50
$38
and
Atmel ATtiny24/44/84 [Preliminary]
Figure 21-2 on page 170
adr MSB
adr MSB
adr MSB
adr MSB
adr MSB
Byte 2
$53
$80
$00
$00
$00
$00
$00
$00
$00
$08
$08
$00
$00
$00
$E0
Instruction Format
Minimum Wait Delay
describes the Instruction set.
Extended adr
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
adr LSB
Byte 3
4.5ms
4.0ms
4.0ms
4.5ms
$00
$00
$00
$00
$00
$00
$00
$00
$00
high data byte out
low data byte out
high data byte in
low data byte in
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte out
data byte in
data byte in
data byte in
Byte4
$00
$00
$00
$00
$00
169
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