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LC72345W Datasheet

  • LC72345W

  • Low-Voltage ETR Controller with On-Chip DC-DC Converter

  • 13頁

  • SANYO

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Ordering number : ENN6171
CMOS IC
LC72344W, 72345W
Low-Voltage ETR Controller with On-Chip DC-DC
Converter
Overview
The LC72344W and LC72345W are low-voltage
electronic tuning microcontrollers that include a DC-DC
converter, a PLL that operates up to 230 MHz, a 1/4 duty
1/2 bias LCD driver and other functions on chip. The
built-in DC-DC converter provided by these ICs can easily
implement a tuning system voltage generator circuit, and
furthermore, since the transistor required for the low-pass
filter is built in, these ICs can contribute to further end
product cost reductions. Additionally, the DC-DC
converter output voltage can be provided to other external
ICs, making these products optimal for low-voltage
portable audio equipment that includes a radio receiver.
Package Dimensions
unit: mm
3190-SQFP64
[LC72344W, 72345W]
12.0
10.0
1.25
48
49
0.5
0.18
1.25
33
32
0.15
12.0
10.0
0.5
1.25
64
17
1
16
Functions
鈥?Program memory (ROM): 3072
脳
16 bits (6 KB)
LC72344W
4096
脳
16 bits (8 KB)
LC72345W
鈥?Data memory (RAM): 192
脳
4 bits LC72344W
256
脳
4 bits LC72345W
鈥?Cycle time: 40 碌s (all 1-word instructions)
鈥?Stack: 8 levels
鈥?LCD driver: 48 to 76 segments (1/4 duty, 1/2 bias drive)
鈥?Interrupts: One external interrupt
Timer interrupts (1, 5, 10, and 50 ms)
鈥?A/D converter: Two input channels (5-bit successive
approximation conversion)
鈥?Input ports: 6 ports (of which 2 can be switched for use
as A/D converter inputs)
鈥?Output ports: 6 ports (of which 1 can be switched for use
as the beep tone output and 2 are open-
drain ports)
鈥?I/O ports: 16 ports (of which 8 can be switched for use
as LCD ports as mask options)
(Continued on next page.)
0.5
0.1
0.5
1.7max
1.25
SANYO: SQFP64
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
31000RM (OT) No. 6171-1/13

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