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LPC2101 Datasheet(PDF) 9 Page - NXP Semiconductors |
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LPC2101 Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 37 page LPC2101_02_03_4 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 04 — 2 June 2009 9 of 37 NXP Semiconductors LPC2101/02/03 Single-chip 16-bit/32-bit microcontrollers [1] 5 V tolerant (if VDD(3V3) and VDDA ≥ 3.0 V) pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control. [2] Open-drain 5 V tolerant (if VDD(3V3) and VDDA ≥ 3.0 V) digital I/O I2C-bus 400 kHz specification compatible pad. It requires external pull-up to provide an output functionality. Open-drain configuration applies to ALL functions on that pin. [3] 5 V tolerant (if VDD(3V3) and VDDA ≥ 3.0 V) pad providing digital I/O (with TTL levels and hysteresis and 10 ns slew rate control) and analog input function. If configured for an input function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns. When configured as an ADC input, digital section of the pad is disabled. [4] 5 V tolerant (if VDD(3V3) and VDDA ≥ 3.0 V) pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control. If configured for an input function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns. [5] A LOW level during reset on pin P0.14 is considered as an external hardware request to start the ISP command handler. [6] Open-drain 5 V tolerant (if VDD(3V3) and VDDA ≥ 3.0 V) digital I/O I2C-bus 400 kHz specification compatible pad. It requires external pull-up to provide an output functionality. Open-drain configuration applies only to I2C function on that pin. [7] Pad provides special analog functionality. [8] For lowest power consumption, pin should be left floating when the RTC is not used. [9] See LPC2101/02/03 User manual UM10161 for details. VSS 7, 19, 43 I Ground: 0 V reference. VSSA 31 I Analog ground: 0 V reference. This should be nominally the same voltage as VSS but should be isolated to minimize noise and error. VDDA 42 I Analog 3.3 V power supply: This should be nominally the same voltage as VDD(3V3) but should be isolated to minimize noise and error. The level on this pin also provides a voltage reference level for the ADC. VDD(1V8) 5I 1.8 V core power supply: This is the power supply voltage for internal circuitry and the on-chip PLL. VDD(3V3) 17, 40 I 3.3 V pad power supply: This is the power supply voltage for the I/O ports. VBAT 4 I RTC power supply: 3.3 V on this pin supplies the power to the RTC. Table 3. Pin description …continued Symbol Pin Type Description |
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