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LC723780LC723780 LC72336/LC72338LC72336/LC72338
XIN
XOUT
FMIN
AMIN
DATA
LATCH
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
SIO
BUS
DRIVR.
BUS
DRIVR.
BUS
DRIVR.
BUS
DRIVR.
PJ3
PKO/INT
INTERRUPT
INTERRUPT
PK1/INT
PK2/INT
PJ2
PJ1
PJ0
DATA
LATCH
PK3/INT
ADI4/PI0
ADI5/PI1
ADI6/PI2
ADI7/PI3
PL3
PL2
PL1
PL0
BUS
DRIVR.
DATA
LATCH
PM3
PM2
PM1
PM0
BUS
DRIVR.
DATA
LATCH
PO3
PO2
PO1
PO0
BUS
DRIVR.
DATA
LATCH
PP3
PP2
PP1
PP0
BUS
DRIVR.
DATA
LATCH
PQ3
PQ2
PQ1
PQ0
BUS
DRIVR.
DATA
LATCH
PR3
PR2
PR1
PR0
BUS
DRIVR.
DATA
LATCH
PS3
PS2
PT1
PT0
PS1
PS0
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
INE0
SUBPD
EO1
EO2
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
BEEP GEN
(PRG/FIX)
PN3
PN2
PN1
PN0/BEEP
MPX
SELECTOR
PHASE
DETECTOR
SUB
C.P.
UNLOCK
F/F
REFERENCE DIVIDER
DIVIDER
SYSTEM CLOCK
GENERATOR
1/16,1/17
PROGRAMMBLE DIVIDER
1/2
PLL DATA LATCH
UNIVERSAL
COUNTER
(20bits)
SNSF/F
SNS
DTR/ADR
RAM
ROM
16k 4bits
64k 16bits
ADDRESS
DECODER
BANK
TIMER
PROG 2
FIX 2
ADDRESS DECODER
PROGRAM COUNTER
BUS
CONTROL
INSTRUCTION
DECODER
STACK 32k 16bits
(PC,BANK,CF,PF)
PF
SKIP
JUDGE
LATCH
A
LATCH
B
ALU
BUS
STATUS
READ
REGISTER
STATUS
WRITE
REGISTER
A/D-C
(8bits)
INTERRUPT
CONTROL
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
DATA
LATCH
BUS
DRIVR.
MPX(8ch)
ADI0/PH0
SI0/PG3
SO0/PG2
SCK0/PG1
PG0
SI1/PF3
SO1/PF2
SCK1/PF1
SI2/PE3
SO2/PE2
SCK2/PE1
PF0
PE0
INT4/PD0
PD2
PD3
PC3
PC2
PC1
PC0
INT5/PD1
ADI1/PH1
ADI2/PH2
ADI3/PH3
3
PA0
RESET
LCTR
PA1
PA2
PA3
PB0
PB1
PB2
PB3
HOLD
TEST1
TEST2
HCTR
VSS
VDD
SNS
VDET
XIN
XOUT
FMIN
AMIN
SNS
HCTR
LCTR
V
DD
V
DD
1
V
DD
2
V
SS
HOLD
TEST1
TEST2
PA0
PA1
PA2
PA3
PB0
PB1
PB2
PB3
PC0
PC1
PC2
PC3
PG0
EO1
EO2
COM1
SCK0 / PG1
SO0 / PG2
SI0 / PG3
COM2
COM2
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17 / PE0
S18 / PE1 / SCK2
S19 / PE2 / SO2
S20 / PE3 / SI2
S21 / PF0
S22 / PF1 / SCK1
S23 / PF2 / SO1
S24 / PF3 / SI1
S29 / PN0 / BEEP
S30 / PN1
S31 / PN2
S32 / PN3
PJ3 / DAC3
S25 / PM0
S26 / PM1
S27 / PM2
S28 / PM3
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
BUS
DRIVER
BEEP
PJ2 / DAC2
PJ1 / DAC1
PJ0 / DAC0
PK3
PK2
PK1 / INT1
PK0 / INT0
PH3 / ADI3
PH2 / ADI2
PH1 / ADI1
PH0 / ADI0
MPX
INTERRUPT
LCD
PORT
DRIVER
LATCH
96
LCPA / B
LCPA / B
SEG
PLA
4
4
7
PHASE
DETECTOR
UNLOCK
F / F
COMMON
DRIVER
SELECTOR
REFERENCE DIVIDER
PROGRAMMABLE DIVIDER
LATCH
DIVIDER
1 /16, 1 /17
SNSFF
V-DET
1 /2
UNIVERSAL
COUNTER
(20bits)
RAM
512 X 4bits
ROM
8k X 16bits
LC72336
6k X 16bits
ADDRESS
DECODER
BUS
DRIV.
LATCH
BUS
DRIV.
LATCH
BUS
DRIV.
SIO
LATCH
BUS
DRIV.
ADC
DAC
JUDGE
ALU
STACK
PROGRAM
COUNTER
INSTRU-
CTION
DECODER
ADDRESS
DECODER
∗
MPX
MPX
MPX
MPX
MPX
53 Car Audio 54 Car Audio
Overview
Functions
Overview
Functions
Block Diagram Block Diagram
Electronic Tuning ETR ControllersElectronic Tuning ETR Controllers Electronic Tuning ETR ControllersElectronic Tuning ETR Controllers
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
■ High-speed programmable divider
■ Program memory (ROM): LC72336 - 6143 words 16 bits (12 KB)
LC72338 - 8191 words 16 bits (16 KB)
■ Data memory (RAM): 512 4 bits
■ All instructions are one word
■ Cycle time: 1.33 µs
■ 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)
■ 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 µs/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)
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.
SeriesSeries