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MC13233CR2 データシート(PDF) 11 Page - Freescale Semiconductor, Inc |
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MC13233CR2 データシート(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 38 page MC1323x Advance Information, Rev. 0.0 Freescale Semiconductor 11 7 System and Power Management The MC1323x is inherently a low power device, but it also has extensive system control and power management to maximize battery life and provide system protection. 7.1 Modes of Operation The MC1323x modes of operation include: • Active background mode for code development • Run mode — CPU clocks can be run at full speed and the internal supply is fully regulated. • LPRun mode — CPU clock is set to 500 kHz and peripheral clocks (bus clock) to 250 kHz and the internal voltage regulator is in standby • Wait mode — CPU shuts down to conserve power; system clocks are running and full regulation is maintained • LPWait mode — CPU shuts down to conserve power; peripheral clocks are restricted to 250 kHz and the internal voltage regulator is in standby • STOP modes — System clocks are stopped and voltage regulator is in standby — STOP3 — All internal circuits are powered for fast recovery (32 MHz oscillator on-off optional) — STOP2 — Partial power down of internal circuits, RAM content is retained; I/O states are held 7.2 Power Management The MC1323x power management is controlled through programming of the modes of operation. Different modes allow for different levels of power-down. Additional features include: • The transceiver is powered as required • The analog radio is only powered-up as required to do a TX, RX, or CCA/ED operation • Peripheral control clock gating can be disabled on an MCU module-by-module basis to provide lowest power • Programmed mode manages — Degree of chip power down — Retention of programmed parameters — Clock management • Power-down and wake-up (clocks and analog blocks) are gracefully controlled • RTC can be used as wake-up timer • Wake-up available through KBI and UART Rx asynchronous interrupts • Real-time counter (RTC) module — 16-bit modulus counter with binary or decimal based prescaler for precise time base, time-of-day, calendar or task scheduling functions. — Capable of greater than one day interrupt. — Can also be used for device wake-up. |
同様の部品番号 - MC13233CR2 |
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同様の説明 - MC13233CR2 |
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