interface products copyright ? 2005 by silicon laboratories 9.14.2005 cp2101 3.3 v voltage regulator 48 mhz oscillator in out suspend suspend 11 12 regin 7 gnd 3 rst 9 d+ 4 d- 5 8 uart ri dcd cts rts rxd txd dsr dtr 2 1 28 27 26 25 24 23 2 3 external rs-232 transceiver or uart circuitry (to external circuitry for usb suspend states) vbus d- d+ gnd 4 5 6 usb connector 6 1 vdd vbus usb function controller usb transceiver 512b tx buffer 512b rx buffer 512b eeprom vdd cp2101 usb to uart bridge description - the cp2101 is a highly-integrated usb-to-uart bridge controller pro - viding a simple solution for updating rs-232 designs to usb using a minimum of components and pcb space. the cp2101 includes a usb 2.0 full-speed function c ontroller, usb transceiver, oscillator, eeprom and asynchronous serial data bus (uart) with full modem control sig - nals in a compact 5 x 5 mm qfn-28. no other external usb components are required. example applications - upgrade of rs-232 legacy devices to usb - cellular phone usb interface cable - pda usb interface cable - usb to rs-232 serial adapter virtual com port drivers - works with existing com port applications - royalty-free distribution license - windows 98se/2000/xp - mac os-9 - mac os-x - linux 2.40 features usb function controller and transceiver - usb specification 2.0 compliant; full-speed (12 mbps) - integrated 512 byte eeprom for vendor id, etc. - integrated transceiver; no external resistors required - integrated clock; no external crystal required - usb suspend states supported via suspend pins asynchronous serial data bus (uart) - all handshaking and modem interface signals - data formats supported: 8-bit; 1 stop bit - parity: odd, even, no parity - baud rates: 300 bps to 921.6 kbps - 512 byte receive buffer; 512 byte transmit buffer - hardware x-on/x-off handshaking - event character support power-on reset circuit supply voltage - self-powered: 3.0?3.6 v - usb bus powered: 4.0?5.25 v 28-pin qfn - temperature range: ?40 to +85 c
interface products copyright ? 2004 by silicon laboratories 9.14.2005 silicon laboratories and silicon labs are trademarks of silicon laboratories inc. other products or brandnames mentioned her ein are trademarks or registered tr ademarks of their respective holders cp2101 usb to uart bridge selected electri cal specifications (t a = ?40 to +85 c, vregin = 5.0 v unless ot herwise specified unless otherwise specified) cp2101ek evaluation kit?a complete hw/sw demonstration of the cp2101 chip and associated software drivers. the cp2101ek shown below includes the following: - cp2101tb circuit board with usb connector, cp2101 chip, rs-232 transceiver, and db-9 connector - cd rom with device drivers - usb cable - rs-232 cable parameter conditions min typ max units regulator input voltage (regin) 4.0 5.25 v v dd (regulator output) 3.0 3.3 3.6 v i dd (regulator output) 80 ma regulator bias current 70 a supply current (from regin) usb active usb suspend mode 18 90 ma a pin number signal 1 dcd 2ri 3gnd 4d+ 5d? 6vdd 7regin 8vbus 9 rst 11 suspend 12 suspend 23 cts 24 rts 25 rxd 26 txd 27 dsr 28 dtr 10, 13?22 no connect package information 1 e d a2 a a1 e a3 e2 r e l bottom view side view 2 3 4 5 6 7 8 9 10 12 13 14 21 20 19 17 16 15 28 27 26 24 23 22 e2 25 2 d2 11 18 d2 2 6 x e 6 x e detail 1 detail 1 aa bb cc dd b mm 0.80 0.90 1.00 a min typ max 0 0.02 0.05 a1 0 0.65 1.00 a2 0.25 a3 0.18 0.23 0.30 b 5.00 d 2.90 3.15 3.35 d2 0.435 aa 0.435 bb 5.00 e 2.90 3.15 3.35 e2 0.5 e 0.18 cc 0.45 0.55 0.65 l 28 n 0.09 r 7 nd 7 ne 0.18 dd cp2101ek evaluation kit
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