Sanyo EP93F Brochure page 29

Electronic Tuning ETR Controllers Electronic Tuning ETR Controllers
LC723780 LC723780
Overview
The LC723780 series are large-memory ETR controllers that provide up to 128 KB of ROM and up to 8 KB of
RAM.
In addition to a rich set of table reference instructions to take advantage of the large ROM capacity, these devices
also feature an improved interrupt system for direct control of the CD mechanism and the CD DSP, support for
RDS products, and powerful communications for use within the end product and with external systems as well.
In car audio applications in particular, these communication functions allow a reduction in the number connecting
wires between the front panel circuit board and the main system circuit board.
Functions
ROM/RAM: 40 KB/2 KB (LC723781)
48 KB/2 KB (LC723782)
64 KB/4 KB (LC723783)
96 KB/6 KB (LC723784)
128 KB/8 KB (LC723785)
Cycle time: 1.33 s/833 ns (all instructions are one word) at 4.5 MHz/7.2 MHz
Serial I/O: Three channels (supports 8-bit, 2- or 3-wire systems) MSB/LSB first switching
Multiple interrupts: 16 levels
A/D converter: 8-bit successive approximation A/D converter with 8 input channels
PLL block: Dead zone control, unlocked state detection circuit
QTP version: LC72F3781
Package: QIP100E (14 20 mm)
Block Diagram
53 Car Audio
Series Series
Electronic Tuning ETR Controllers Electronic Tuning ETR Controllers
LC72336/LC72338 LC72336/LC72338
Overview
The LC72336 and LC72338 are system-on-chip electronic tuning microcontrollers that integrate both a PLL circuit
that can operate at up to 150 MHz and a 1/3 duty LCD driver. They also feature a highly efficient instruction set
and powerful hardware
Functions
High-speed programmable divider
Program memory (ROM): LC72336 - 6143 words
LC72338 - 8191 words
Data memory (RAM): 512 4 bits
All instructions are one word
Cycle time: 1.33 s
Stack: 8 levels
LCD driver: Up to 96 segments (1/3 duty, 1/3 bias)
Serial I/O: Up to 3 channels (8-bit 3-wire type)
External interrupt: Two channels (INT0 and INT1)
Supports both rising edge and falling edge detection
Package: LC72336 - QIP80E (14 20 mm)
LC72338 - QIP80E (14 20 mm)
Block Diagram
16 bits (12 KB)
16 bits (16 KB)
54 Car Audio