Embest SBC8140, User Manual

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seamlessly with 12-bit or 24-bit interfaces. The DVI interface supports flat
panel display resolutions up to UXGA at 165 MHz in 24-bit true colour pixel
format.
2.2.6 MAX3232 Transceiver
The MAX3232 transceiver has a proprietary low-dropout transmitter
output stage enabling true RS-232 performance from a 3.0V to 5.5V
supply with a dual charge pump. The devices require only four small 0.1µF
external charge-pump capacitors. The MAX3232 is guaranteed to run at
data rates of 120kbps while maintaining RS-232 output levels.
The MAX3232 has 2 receivers and 2 drivers. It features a 1µA shutdown
mode that reduces power consumption and extends battery life in portable
systems. Its receivers remain active in shutdown mode, allowing external
devices such as modems to be monitored using only 1µA supply current.
The MAX3232 is pin, package, and functionally compatible with the
industry-standard MAX242 and MAX232, respectively. It is able to ensure
±
5V transmission voltage which is the lowest requirement by RS-232
standard even when working at a high data rate.
The MAX3232 guarantees a 120kbps data rate with worst-case loads.
Typically, it can operate at a data rate of 235kbps. The transmitter can be
paralleled to drive multiple receivers or mice.