ATMEGA169V-1MC Atmel, ATMEGA169V-1MC Datasheet - Page 221
ATMEGA169V-1MC
Manufacturer Part Number
ATMEGA169V-1MC
Description
IC MCU AVR 16K 1.8V 1MHZ 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA169V-1MC
Core Processor
AVR
Core Size
8-Bit
Speed
1MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
64-MLF®, 64-QFN
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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LCD Control and Status
Register B – LCDCRB
2514H–AVR–05/03
• Bit 7 – LCDCS: LCD Clock Select
When this bit is written to zero, the system clock is used. When this bit is written to one,
the external asynchronous clock source is used. The asynchronous clock source is
either Timer/Counter Oscillator or external clock, depending on EXCLK in ASSR. See
“Asynchronous operation of the Timer/Counter” on page 138 for futher details.
• Bit 6 – LCD2B: LCD 1/2 Bias Select
When this bit is written to zero, 1/3 bias is used. When this bit is written to one, ½ bias is
used. Refer to the LCD Manufacture for recommended bias selection.
• Bit 5:4 – LCDMUX1:0: LCD Mux Select
The LCDMUX1:0 bits determine the duty cycle. Common pins that are not used are ordi-
nary port pins. The different duty selections are shown in Table 94.
Table 94. LCD Duty Select
Note:
• Bit 3 – Res: Reserved Bit
This bit is reserved bit in the ATmega169 and will always read as zero.
Bit
Read/Write
Initial Value
LCDMUX1
0
0
1
1
1. 1/2 bias when LCD2B is written to one and 1/3 otherwise.
LCDCS
R/W
7
0
LCDMUX0
LCD2B
R/W
6
0
0
1
0
1
LCDMUX1
R/W
5
0
Static
Duty
1/2
1/3
1/4
LCDMUX0
R/W
4
0
1/2 or 1/3
1/2 or 1/3
1/2 or 1/3
Static
Bias
3
R
0
–
(1)
(1)
(1)
LCDPM2
R/W
2
0
ATmega169V/L
COM Pin
COM0:1
COM0:2
COM0:3
COM0
LCDPM1
R/W
1
0
LCDPM0
I/O Port Pin
R/W
0
0
COM1:3
COM2:3
COM3
None
LCDCRB
221
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