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ZLR64400H2864G Datasheet(PDF) 11 Page - Zilog, Inc. |
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ZLR64400H2864G Datasheet(HTML) 11 Page - Zilog, Inc. |
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11 / 155 page  PS024502-1205 P R E L I M I N A R Y Architectural Overview ZLR64400 ROM MCU Product Specification 1 Architectural Overview The ZLR64400 ROM MCU is a member of the Crimzon family of infrared microcon- trollers. It provides a directly-compatible code upgrade path to other Crimzon MCUs, offers a robust learning function, and features up to 64KB read only memory (ROM) and 1004 bytes of general-purpose random-access memory (RAM). Two timers allow the gen- eration of complex signals while performing other counting operations. A UART allows the ZLR64400 MCU to be a slave/master database chip. When the UART is not in use, the Baud Rate Generator 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. Simply stated, 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, are not tuned well, and result in frustrated users. ZiLOGs ZLR64400 MCU is the first chip dedicated to solving 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. Best of all, however, will be the user experience promised by ZiLOGs superior learn- ing function. 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 micro- controller. Additional features are listed below the table. Table 1. ZLR64400 ROM MCU Features Device ROM (KB) RAM* (Bytes) I/O Lines Voltage Range ZLR64400 MCU 64 1004 24, or 16 2.03.6V Note: *General-purpose registers implemented as random-access memory. |
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