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32bit MCU family enhances memory, packaging features

Posted: 16 Nov 2010     Print Version  Bookmark and Share

Keywords:32bit MCU  RX600 series  on-chip Flash memory 

Renesas Electronics Corporation rolls out three groups of products in the RX600 Series of 32bit microcontrollers (MCUs) which enhances memory and packaging features. The RX630 group for consumer, office automation, and industrial equipment, and the RX63N/RX631 groups for networked equipment is a line-up of 18 products with up to 2MB of on-chip flash memory.

The memory range of these The MCU groups packs 2MB of on-chip zero wait-state Flash memory, as well as 128KB of SRAM. The package offerings have a range of 177 pins in sizes starting at 7 x 7mm with pin compatibility between like packages for easy migration of designs.

RX630/RX63N/RX631 groups MCUs

The group has been enhanced to reduce system cost, power consumption, and increase system capabilities, including a pin for connection to an alternate voltage source to automatically power the Real Time Clock (RTC) while drawing just 0.6µW typical power in Deep Standby mode, a tamper detection system within the RTC to time-stamp an intrusion event from three independent sources, an on-chip temperature sensor, an on-chip 50MHz oscillator to boot up a system at high speed, an on-chip voltage reference for the analogue to digital converters, more serial communication channels, and better on-chip data flash characteristics with up to 100K erase cycles and finer write/erase granularity at just 2B write and 32B erase to eliminate the need for an external EEPROM device.

The RX63N/RX631 groups support Ethernet, USB 2.0 host/device/OTG, and CAN connectivity,

while the RX630 group is the same except the USB 2.0 interface is device only. Compared to the RX62xgroups, there are additional CAN (up to three), I2C, and serial channels.

The RX63x MCUs groups achieve a low voltage operation of 2V for the RTC. They include a VBATT pin for a separate RTC power domain which automatically switches over from Vcc to VBATT when Vcc falls below VBATT. The VBATT domain also includes a tamper-detection unit to time stamp tamper events registered on up to three input pins. This allows applications, such as home security and utility metering systems to record the time of day when the system is maliciously opened, even when the main power is off and the CPU is not operating.

Communication and TFT display functions have been added for improved ease-of-use and lower costs. The RX630 Group MCUs now include a USB 2.0 (full speed) device interface as a standard feature. To improve ease of use, their peripheral functions have been strengthened as follows to include a 13 serial communication (synchronous and asynchronous) channels and can support to three channels of full CAN interfaces. It now has maximum of twenty two 16-bit timer channels. The A/D converter channels now number 29 (12bit A/D converter : 21 channels, 10bit A/D converter: 8 channels). Furthermore, the optimal number of channels can be selected for pin compatibility for different packages. The RX630 Group line-up includes flash memory capacities from 256 KB to 2MB, and packages from 64 to 176 pins.

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