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ZLR64400S2032G Datasheet(PDF) 7 Page - Maxim Integrated Products

Part # ZLR64400S2032G
Description  ROM MCU with Learning Amplification
Download  144 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

ZLR64400S2032G Datasheet(HTML) 7 Page - Maxim Integrated Products

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19-4624; Rev 0; 5/09
Architectural Overview
ZLR64400 ROM MCU
Product Specification
1
Architectural Overview
Maxim’s ZLR64400 ROM MCU is a member of the Crimzon® family of infrared
microcontrollers. It provides a directly-compatible code upgrade path to other Crimzon
MCUs, offers a robust learning function, and features up to 64 KB ROM and 1004 bytes
of general-purpose RAM. Two timers allow the generation of complex signals while
performing other counting operations. A universal asynchronous receiver/transmitter
(UART) allows the ZLR64400 MCU to be a Slave/Master database chip. When the UART
is not in use, the baud rate generator (BRG) can be used as a third timer. Enhanced Stop
Mode Recovery (SMR) features allow the ZLR64400 MCU to awaken from STOP mode
on any change of logic, and on any combination of the 12 SMR inputs. The SMR source
can also be used as an interrupt source.
Many high-end remote control units offer a learning function. A learning function allows a
replacement remote unit to learn most infrared signals from the original remote unit and
regenerate the signal. However, the amplifying circuits of many learning remotes are
expensive and are not tuned well. Maxim’s ZLR64400 MCU is the first chip dedicated to
solve this problem because it offers a built-in tuned amplification circuit in a wide range of
positions and battery voltages. The only external component required is a photodiode.
The ZLR64400 MCU greatly reduces system cost, yet improves learning function reliabil-
ity. With all new features, the ZLR64400 MCU is excellent for infrared remote control and
other MCU applications.
Features
Table 1 lists the memory, I/O, and power features of the ZLR64400 ROM Memory
microcontroller. Additional features are listed below the table.
The ZLR64400 MCU supports the following 20 interrupt sources with 6 interrupt vectors:
Two from T8, T16 time-out and capture
Three from UART Tx, UART Rx, UART BRG
One from LVD
Table 1. ZLR64400 ROM MCU Features
Device
ROM (KB)
RAM* (Bytes)
I/O Lines
Voltage
Range
ZLR64400 MCU
64
1004
24, or 16
2.0–3.6 V
*General-purpose registers implemented as random-access memory.


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