The new product halves operating current while quadrupling operating speed for hand-held card reader tokens. The new S1C17M10 is Epson's first microcontroller developed for card reader tokens. Card reader tokens issue passwords while communicating with a user's smart card. Although card reader tokens offer better security than other types of tokens, their power consumption is trending upward due to the need to control communications with the card. To reduce power consumption, Epson provided the new microcontroller with an ISO 7816-3-compliant smart card interface function. The MCU operates at voltages ranging from 1.8 V to 5.5 V, yet at every voltage current consumption is 0.6uA (typical) in HALT mode with RTC ON, and 145 uA/MHz (typical) in RUN mode.
The maximum operating frequency is 16.8 MHz. This enables the chip to operate at quadruple the speed of a comparable earlier product and on half the current, given the same conditions. It performs more complex software and transmission processing yet has a longer battery life. Also built into the chip is an LCD driver that can directly drive the liquid crystal in a display with up to 1,280 dots. With support for up to two lines and 10 alphanumeric characters, the display can provide all the information needed. In addition, the microcontroller integrates on a single chip UART, SPI and I2C interfaces, 64 Kbytes of self-programmable Flash memory, and 4 Kbytes of RAM. Epson will ship the product in a 128-pin thin quad flat pack (TQFP15-128 pin). The product will also be available as a bare die to help users reduce the board area within their finished products.
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