ATMEGA128A-AU Atmel, ATMEGA128A-AU Datasheet
ATMEGA128A-AU
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ATMEGA128A-AU Summary of contents
Page 1
... I/O and Packages – 53 Programmable I/O Lines – 64-lead TQFP and 64-pad QFN/MLF • Operating Voltages – 2.7 - 5.5V • Speed Grades – 16MHz ® ® AVR 8-bit Microcontroller (1) 8-bit Microcontroller with 128KBytes In-System Programmable Flash ATmega128A Summary Rev. 8151HS–AVR–02/11 ...
Page 2
... The Pinout figure applies to both TQFP and MLF packages. The bottom pad under the QFN/MLF package should be soldered to ground. ® ® AVR ATmega128A is a low-power CMOS 8-bit microcontroller based on the AVR 48 PA3 (AD3) 47 PA4 (AD4) 46 PA5 (AD5) 45 PA6 (AD6) 44 PA7 (AD7) ...
Page 3
... GENERAL PURPOSE REGISTERS ALU STATUS REGISTER DATA REGISTER DATA DIR. PORTB REG. PORTB PORTB DRIVERS PB0 - PB7 ATmega128A PC0 - PC7 PORTC DRIVERS DATA REGISTER DATA DIR. PORTC REG. PORTC 8-BIT DATA BUS CALIB. OSC INTERNAL OSCILLATOR OSCILLATOR WATCHDOG TIMER OSCILLATOR TIMING AND ...
Page 4
... Atmel ATmega128A is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega128A AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits. ...
Page 5
... As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port A also serves the functions of various special features of the ATmega128A as listed on page 73. ...
Page 6
... As inputs, Port E pins that are externally pulled low will source current if the pull-up resistors are activated. The Port E pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port E also serves the functions of various special features of the ATmega128A as listed on page 81. ...
Page 7
... PEN has no function during normal operation. 8151HS–AVR–02/11 ® ® AVR ATmega103 compatibility mode, these pins only serves as strobes signals to the 324. Shorter pulses are not guaranteed to generate a reset. , even if the ADC is not used. If the ADC is used, it should be connected ATmega128A “System and Reset CC 7 ...
Page 8
... A comprehensive set of development tools, application notes, and datasheets are available for download on http://www.atmel.com/avr. Note: 4. Data Retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C. ATmega128A 8 1. 8151HS–AVR–02/11 ...
Page 9
... RWWSRE BLBSET – – – – – – – – PORTG4 PORTG3 – – DDG4 DDG3 – – PING4 PING3 ATmega128A Bit 2 Bit 1 Bit 0 – – – – – – – – – – – – UCSZ11 UCSZ10 UCPOL1 UPE1 U2X1 ...
Page 10
... UCSR0A RXC0 $0A ($2A) UCSR0B RXCIE0 $09 ($29) UBRR0L $08 ($28) ACSR ACD $07 ($27) ADMUX REFS1 $06 ($26) ADCSRA ADEN $05 ($25) ADCH $04 ($24) ADCL $03 ($23) PORTE PORTE7 ATmega128A 10 Bit 6 Bit 5 Bit 4 Bit 3 PORTF6 PORTF5 PORTF4 PORTF3 DDF6 DDF5 DDF4 DDF3 – – – – SP14 ...
Page 11
... I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers $00 to $1F only. 8151HS–AVR–02/11 Bit 6 Bit 5 Bit 4 Bit 3 DDE6 DDE5 DDE4 DDE3 PINE6 PINE5 PINE4 PINE3 PINF6 PINF5 PINF4 PINF3 ATmega128A Bit 2 Bit 1 Bit 0 DDE2 DDE1 DDE0 PINE2 PINE1 PINE0 PINF2 PINF1 PINF0 Page ...
Page 12
... Branch if Less Than Zero, Signed BRHS k Branch if Half Carry Flag Set BRHC k Branch if Half Carry Flag Cleared BRTS k Branch if T Flag Set BRTC k Branch if T Flag Cleared ATmega128A 12 Operation Flags Rd ← Z,C,N,V,H Rd ← Z,C,N,V,H Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S Rd ← Z,C,N,V,H Rd ← Z,C,N,V,H Rd ← ...
Page 13
... Set Negative Flag CLN Clear Negative Flag SEZ Set Zero Flag CLZ Clear Zero Flag SEI Global Interrupt Enable CLI Global Interrupt Disable 8151HS–AVR–02/11 ATmega128A then PC ← None then PC ← None Operation Flags then PC ← None then PC ← None Rd ← Rr None Rd+1:Rd ← ...
Page 14
... Set T in SREG CLT Clear T in SREG SEH Set Half Carry Flag in SREG CLH Clear Half Carry Flag in SREG MCU CONTROL INSTRUCTIONS NOP No Operation SLEEP Sleep WDR Watchdog Reset BREAK Break ATmega128A 14 S ← ← Operation Flags V ← ← ← ← ← ...
Page 15
... Tape & Reel 64A 64-lead 1.0 mm, Thin Profile Plastic Quad Flat Package (TQFP) 64M1 64-pad 1.0 mm, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF) 8151HS–AVR–02/11 (2) Ordering Code Package ATmega128A-AU 64A (3) ATmega128A-AUR 64A ATmega128A-MU 64M1 (3) ATmega128A-MUR 64M1 Package Type ATmega128A (1) Operation Range Industrial ...
Page 16
... JEDEC reference MS-026, Variation AEB. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0.25 mm per side. Dimensions D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Lead coplanarity is 0.10 mm maximum. 2325 Orchard Parkway San Jose, CA 95131 R ATmega128A 16 B PIN 1 IDENTIFIER ...
Page 17
... Option B Pin #1 Chamfer (C 0.30) Option C Pin #1 Notch e (0.20 R) TITLE 64M1, 64-pad 1.0 mm Body, Lead Pitch 0.50 mm, 5.40 mm Exposed Pad, Micro Lead Frame Package (MLF) ATmega128A C SEATING PLANE A1 A 0.08 C SIDE VIEW COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM NOTE A 0 ...
Page 18
... Errata The revision letter in this section refers to the revision of the ATmega128A device. 9.1 ATmega128A Rev. U • Wrong value for Version in the JTAG Device Identification Register • First Analog Comparator conversion may be delayed • Interrupts may be lost when writing the timer registers in the asynchronous timer • ...
Page 19
... Update-DR. Problem Fix / Workaround – If ATmega128A is the only device in the scan chain, the problem is not visible. – Select the Device ID Register of the ATmega128A by issuing the IDCODE – If the Device IDs of all devices in the boundary scan chain must be captured 6 ...
Page 20
... Rev. 8151E – 02/ 10.5 Rev. 8151D – 07/ ATmega128A 20 Editing update according to the Atmel new style guide. No more space betweeen the numbers and their units. Updated the last page. Updated the table note of Table 27-3 on page and BODLEVEL=1 Inserted cross reference in “ ...
Page 21
... Rev. 8151A– 08/08 1. Updated “Errata” on page 375. ATmega128A Rev. U. Updated view of “Typical Characteristics” on page 337 Editorial updates. Initial revision. (Based on the ATmega128/L datasheet 2467R-AVR-06/08) Changes done compared to the ATmega128/L datasheet 2467R-AVR-06/08: - Updated “Stack Pointer” on page 13 - “ ...
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... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...