Andy's Technical Information Page
LC72336 / LC72338 Single-Chip Microcontrollers
with Built-In LCD Driver and PLL Circuits
Overview
The LC72336 and LC72338 are single-chip microcontrollers for use in electronic tuners. These products include on chip a PLL circuit that can operate at up to 150 MHz and 1/3 duty LCD drivers. They feature a highly efficient instruction set and powerful hardware.
Functions
High-speed programmable divider
Program memory (ROM)
LC72336: 6143 ´ 16 bits (12 kB)
LC72338: 8191 ´ 16 bits (16 kB)
Data memory (RAM): 512 ´ 4 bits
All instructions are one-word instructions
Cycle time: 1.33 µs
Stack: 8 levels
LCD drivers: Up to 96 segments (1/3 duty, 1/3 bias)
Serial I/O: Up to 3 channels (8-bit 3-wire type)
External interrupts: 2 interrupts (INT0, INT1)
Interrupt on rising or falling edge (selectable)
Internal interrupts: 3 interrupt
Two built-in timer interrupts and 1 serial I/O interrupt
Nested interrupt levels: 4 levels
D/A converter: 4 channels (8-bit PWM output)
A/D converter: 4 channels
(6-bit successive approximation)General-purpose ports:
‹ Input ports: 8
‹ Output ports: 12 (16 maximum)
‹ I/O ports: 8 (20 maximum, can be switched between
input and output in bit units.)
PLL block: Supports 4 types of dead zone control, and includes a built-in unlock detection circuit.Supports 12 different reference frequencies.
Universal counter: 20 bits (Can be used for either frequency or period measurement.)
Timers: Eight types of time measurement
Beep function: Six beep tones
Reset: Built-in voltage detection type reset circuit
Halt mode: Stops the controller operating clock.
Operating supply voltage: 4.5 to 5.5 V (3.5 to 5.5 V if
only the controller block operates.)
80-pin QIP
General programming guidance of LC72336/8 devices with Maycom CPU SYSTEM EM27
The processors SYSTEM EM27 with label Maycom are customized mask-programmed CPU's on base of the LC 72336/8 CPU from Sanyo.
Those in the following specified possibilities apply only to CPU's with the above Maycom designation and not to others!
EM27 Block Diagram
General programming guidance of LC72336/8 devices with Maycom CPU SYSTEM AH29
The processors SYSTEM AH29 with label Maycom are customized mask-programmed CPU's on base of the LC 72336/8 CPU from Sanyo.
Those in the following specified possibilities apply only to CPU's with the above Maycom designation and not to others!
