32-bit RISC processor has large on-chip DRAM.
The M32R/D combines a compact 32-bit RISC CPU with 2 Mbytes of DRAM and 2 kbytes of static-RAM cache to reduce data-transfer bottlenecks. A 128-bit internal bus, which interconnects the DRAM, the cache, and the processor, clocks at 66 MHz and delivers a peak bandwidth of 1 Gbyte/sec between the CPU and internal cache. The on-chip DRAM also reduces power dissipation, consuming 275 mW typ. DSP capabilities allow the M32R/D to function as a 16-bit fixed-point DSP to perform data compression, decompression, and filtering. Housed in an 80-pin QFP, the device costs <$80 (10,000). Mitsubishi Electronics America Inc, Sunnyvale, CA. (408) 730-5900.
DSP core runs embedded-controller tasks.
The Z893X3 family of 16-bit DSP cores offers a set of on-chip peripherals that meets the needs of many embedded applications. Each 20-MIPS device includes a four-channel, 8-bit ADC, a serial-peripheral-interface port, two watchdog timers, 40 I/O lines, and a PLL-driven clock. The Z89323 comes with 8k words of ROM, and the Z89373 is one-time-programmable. Both parts are offered in 44- and 80-pin QFPs and 44- and 68-pin PLCCs. The Z89393 also comes in a 100-pin QFP. Prices start at $4.50 in high volume. Zilog, Campbell, CA. (408) 370-8000.
Reduced-cost evaluation kits include flash microcontrollers.
The FLASHKIT16 and FLASHKIT32 evaluation kits for the vendor's 16-bit 68HC916X1 and 32-bit 68F333 flash microcontrollers consist of the Modular Evaluation Board (MEVB) and two sample parts. The MEVB provides on-board flash EEPROM programming support, an RS-232C-terminal I/O port, and a wire-wrap area. The 68HC916X1 comes in a 120-pin QFP, and the 68F333 comes in a 160-pin QFP. Each kit is available for $499 until June 28. Motorola Advanced Microcontroller Division, Austin, TX. (512) 328-2268.
IC targets high-end smart card.
Based on the ST16XYZ intelligent-memory family, the ST16SF42 smart-card IC offers 16 kbytes of ROM, 384 bytes of RAM, and 2 kbytes of EEPROM for applications requiring enhanced security features, such as subscriber-identification-module (SIM) cards (Global System for Mobile phase II). You can configure both the ROM and EEPROM of the ST16SF42 as two ROM sectors and two EEPROM sectors. You can govern access rules from any ROM or EEPROM sector to any other sector using a customizable memory-access- control matrix, which generates a nonmaskable security interrupt whenever an unauthorized access is attempted. Samples of the ST16SF42 cost $4.96. Production is slated for the fourth quarter. SGS-Thomson Microelectronics, Lincoln, MA. (617) 259-0300.
2-Mbit flash device stores PC-BIOS code.
You can use the Am29F002, a 2-Mbit flash-memory device that operates from a single 5V supply, to store PC-BIOS code in Windows-compatible PCs. Configured as 256k X 8 bits, the Am29F002 uses a boot-sector organization, which allows boot code, parameters, and main code to be stored in different sectors. You can write-protect any or all of the sectors with standard PROM programming equipment. The device offers access times as short as 55 nsec and comes in both 32-pin PLCC and TSOP configurations. Respective prices start at $11.10 and $12.80 for the PLCC and TSOP versions (1000). Advanced Micro Devices Inc, Sunnyvale, CA. (408) 737-2400.
Supervisor IC with reset works with Intel microcontrollers.
A single-chip microcontroller supervisor, the X25045, includes a reset controller optimized for Intel microcontrollers, 4 kbits of EEPROM, and a watchdog timer with programmable intervals. To protect the microcontroller's memory and command state during power-up, power-down, and brownout conditions, the X25045 generates a logic high whenever VCC drops lower than the minimum allowable level or when the watchdog timer has reached its programmable time-out point. The device comes in eight-pin mini DIP, eight-lead SOIC, and 14-lead TSSOP configurations and costs $1.50, $1.50, and $1.64 (10,000), respectively. Xicor Inc, Milpitas, CA. (408) 432-8888. Circle No. 397
Microcontroller family adds low-voltage and industrial types.
The Am186ES and Am188ES 16-bit microcontrollers now come in low-voltage versions, as well as versions specified for operation over the industrial-temperature range of Ð40 to +85°C. The low-voltage devices operate at 3.3V, and you can use them for portable designs in mass-storage devices, handheld terminals, cellular telephones, and modems. The 20-MHz Am186ESLV and Am188ESLV cost $14.24 and $13.52, respectively, in 100-pin PQFPs (1000). The industrial versions cost $15.52 (Am186) and $14.75 (Am188) in 100-pin PQFPs. Advanced Micro Devices Inc, Sunnyvale, CA. (408) 737-2400.
4-Mbit SRAM includes military, aerospace models.
Organized as 256k316 bits, the WMS256K16-XDLX SRAM gives you a choice of 20-, 25-, and 35-nsec access times in military-, industrial-, and commercial-temperature ranges. Housed in a 44-lead SOJ package, the fully hermetic ceramic memory performs reliably in military and aerospace environments and meets ISO 9001 standards. You can also order devices with a 2V minimum data- retention voltage. Prices start at <$500 (100). White Microelectronics, Phoenix, AZ. (602) 437-1520.