PRODUCTPREVIEW
RM46L852
SPNS185 – SEPTEMBER 2012
The I2C module is a multi-master communication module providing an interface between the
microcontroller and an I2C compatible device via the I2C serial bus. The I2C supports both 100 Kbps and
400 Kbps speeds.
A frequency-modulated phase-locked loop (FMPLL) clock module is used to multiply the external
frequency reference to a higher frequency for internal use. The FMPLL provides one of the seven possible
clock source inputs to the global clock module (GCM). The GCM module manages the mapping between
the available clock sources and the device clock domains.
The device also has an external clock prescaler (ECP) module that when enabled, outputs a continuous
external clock on the ECLK terminal. The ECLK frequency is a user-programmable ratio of the peripheral
interface clock (VCLK) frequency. This low frequency output can be monitored externally as an indicator of
the device operating frequency.
The Direct Memory Access Controller (DMA) has 16 channels, 32 control packets and parity protection on
its memory. A Memory Protection Unit (MPU) is built into the DMA to protect memory against erroneous
transfers.
The Error Signaling Module (ESM) monitors all device errors and determines whether an interrupt or
external Error pin/ball is triggered when a fault is detected. The nERROR terminal can be monitored
externally as an indicator of a fault condition in the microcontroller.
The External Memory Interface (EMIF) provides a memory extension to asynchronous and synchronous
memories or other slave devices.
A Parameter Overlay Module (POM) is included to enhance the calibration capabilities of application code.
The POM can re-route Flash accesses to internal memory or to the EMIF, thus avoiding the re-
programming steps necessary for parameter updates in Flash.
With integrated safety features and a wide choice of communication and control peripherals, the
RM46L852 is an ideal solution for high performance real time control applications with safety critical
requirements.
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RM46L852 16/32-Bit RISC Flash Microcontroller
Copyright © 2012, Texas Instruments Incorporated
Summary of Contents for RM46L852
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