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ZLR64400S2032G Datasheet(PDF) 7 Page - Maxim Integrated Products |
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ZLR64400S2032G Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 144 page 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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