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MCP2120-IP 데이터시트(PDF) 21 Page - Microchip Technology |
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MCP2120-IP 데이터시트(HTML) 21 Page - Microchip Technology |
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21 / 36 page ![]() © 2007 Microchip Technology Inc. DS21618B-page 21 MCP2120 FIGURE 4-7: USART ASynchronous Receive Timing TABLE 4-7: USART ASYNCHRONOUS RECEIVE REQUIREMENTS AC Characteristics Standard Operating Conditions (unless otherwise specified) Operating Temperature –40 °C ≤ TA ≤ +85°C (industrial) Operating Voltage VDD range is described in Section 4.1 “DC Characteristics” Param. No. Sym Characteristic Min Typ Max Units Conditions IR110 TRXBIT Receive Baud Rate Hardware Selection 768 — 768 TOSC BAUD2:BAUD0 = 000 384 — 384 TOSC BAUD2:BAUD0 = 001 192 — 192 TOSC BAUD2:BAUD0 = 010 128 — 128 TOSC BAUD2:BAUD0 = 011 64 — 64 TOSC BAUD2:BAUD0 = 100 Software Selection BAUD2:BAUD0 = 111 768 — 768 TOSC Hex Command = 0x87 384 — 384 TOSC Hex Command = 0x8B 192 — 192 TOSC Hex Command = 0x85 128 — 128 TOSC Hex Command = 0x83 64 — 64 TOSC Hex Command = 0x81 IR111 ERXBIT Receive (RXIR pin) Baud rate Error (into MCP2120) —— 1 % IR112 ERXBIT Receive (RX pin) Baud rate Error (out of MCP2120)(1) —— 1 % IR113 TTXRF RX pin rise time and fall time — — 25 ns Note 1: This error is not additive to IR111 parameter. Note: Refer to Figure 4-2 for load conditions. IR112 RX pin IR112 IR110 IR110 IR110 Start Bit Data Bit Data Bit Data Bit IR110 |
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