ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 20
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATmega32U2
Manufacturer Part Number
ATmega32U2
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32U2
Flash (kbytes)
32 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
22
Ext Interrupts
20
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
5
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
10. Appendix-B
20
;*A************************************************************************
**
; $RCSfile: flash_boot_drv.s90,v $
;--------------------------------------------------------------------------
--
; Copyright (c) Atmel.
;--------------------------------------------------------------------------
--
; RELEASE:
; REVISION:
; FILE_CVSID:
;--------------------------------------------------------------------------
--
; PURPOSE:
; This file contains the low level driver for the flash access
;**************************************************************************
**
NAMEflash_drv(16)
;_____ I N C L U D E S
______________________________________________________
#define ASM_INCLUDE
#include "config.h"
;**************************************************************************
**
; This is the absolute table entry points for low level flash drivers
; This table defines the entry points that can be called
; from the application section to perform on-chip flash operations:
;
;
;
;
;
;
;
;
;
;
;
;
;
;
;**************************************************************************
**
ASEG FLASH_END-0x0001B
entry_flash_page_erase_and_write:
entry_flash_page_erase_and_write:
entry_flash_fill_temp_buffer:
entry_flash_prg_page:
entry_flash_page_erase:
R18:17:R16: The byte address of the page
data16 :
address:
R18:17:R16: The byte address of the page
R18:17:R16: The byte address of the page
$Name:
$Revision: 1.7 $
$Id: flash_boot_drv.s90,v 1.7 2005/10/03 15:50:12 $
R16/R17: word to load in the temporary buffer.
R18/R19: address of the word in the temp. buffer.
$
7618C–AVR–07/08