ATMEGA161L-4AI Atmel, ATMEGA161L-4AI Datasheet - Page 135

• Manufacturer Part Number: ATMEGA161L-4AI
• Description: IC AVR MCU 16K LV 4MZ IND 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161L-4AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA161L4AI

Table 55. External Data Memory Characteristics, 2.7 - 5.5 Volts, No Wait State (Continued)
Notes:
Table 56. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 0, SRWn0 = 1
Table 57. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 1, SRWn0 = 0
Table 58. External Data Memory Characteristics, 2.7 - 5.5 Volts, SRWn1 = 1, SRWn0 = 1
1228D–AVR–02/07
12
13
14
15
16
0
10
12
15
16
0
10
12
15
16
0
10
12
14
15
16
Symbol
t
t
t
t
t
Symbol
1/t
t
t
t
t
Symbol
1/t
t
t
t
t
Symbol
1/t
t
t
t
t
t
RLRH
DVWL
WHDX
DVWH
WLWH
RLDV
RLRH
DVWH
WLWH
RLDV
RLRH
DVWH
WLWH
RLDV
RLRH
WHDX
DVWH
WLWH
1. This assumes 50% clock duty cycle. The half period is actually the high time of the external clock, XTAL1.
2. This assumes 50% clock duty cycle. The half period is actually the low time of the external clock, XTAL1.
CLCL
CLCL
CLCL
Parameter
RD Pulse Width
Data Setup to WR Low
Data Hold After WR High
Data Valid to WR High
WR Pulse Width
Parameter
Oscillator Frequency
Read Low to Data Valid
RD Pulse Width
Data Valid to WR High
WR Pulse Width
Parameter
Oscillator Frequency
Read Low to Data Valid
RD Pulse Width
Data Valid to WR High
WR Pulse Width
Parameter
Oscillator Frequency
Read Low to Data Valid
RD Pulse Width
Data Hold After WR High
Data Valid to WR High
WR Pulse Width
Min
230
125
210
230
Min
480
460
480
Min
730
710
730
Min
730
375
710
730
70
4 MHz Oscillator
4 MHz Oscillator
4 MHz Oscillator
4 MHz Oscillator
Max
Max
Max
Max
335
585
585
1.0t
0.5t
1.0t
1.0t
2.0t
2.0t
2.0t
3.0t
3.0t
3.0t
3.0t
3.0t
3.0t
0.5t
1.5t
Min
Min
Min
Min
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
0.0
0.0
0.0
CLCL
CLCL
Variable Oscillator
Variable Oscillator
Variable Oscillator
Variable Oscillator
-20
-55
-40
-20
-20
-40
-20
-20
-40
-20
-20
-40
-20
-0
-0
ATmega161(L)
2.0t
3.0t
3.0t
CLCL
CLCL
CLCL
Max
Max
Max
Max
4.0
4.0
4.0
-165
-165
-165
MHz
MHz
MHz
Unit
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
Unit
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
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