PRODUCT INFORMATION CDC 3257G May/2005 CDC 3257G ARM7-Based Car Dashboard Controller The CDC 3257G-Cx is a pin-compatible Flash ROM derivate of Micronas’ 32-bit Car Dashboard Controller family based on an ARM7TDMI CPU core (CDC32xxG). ◆ RTC delivering hours, minutes, seconds ◆ Two I2C master modules ◆ Polling/Flash timer output ◆ Seven stepper motor drivers ◆ PLL circuitry delivering up to 50 MHz ◆ Six PWM modules (configurable as 2×8 bit or 1×16 bit) ◆ 4- to 5-MHz oscillator This device comes along with additional features of the Cx platform like a superior power saving module (PSM), two highspeed CAN modules (Bosch V2.0B) and a device lock module to inhibit Flash access. Main characteristics of the PSM are three additional low-power modes (IDLE, WAKE, and STANDBY), an internal RC oscillator, a polling/Flash timer output, as well as an RTC (Real Time Clock). The CDC 3257G also contains the patented built-in ERM (EMI Reduction Module). ◆ EMI reduction module (ERM) ◆ Digital watchdog ◆ Central clock divider ◆ Interrupt controller with 40 inputs and 16 priority levels ◆ Six port interrupts ◆ Regulator input supervision for reset/ alarm (alarm comparator) ◆ Clock and supply supervision ◆ 16-channel 10-bit ADC Features ◆ 256 KB Flash ◆ 12 KB SRAM ◆ 8 KB boot ROM ◆ Four CPU operation modes (Deep Slow, Slow, Fast, PLL) ◆ Three low-power modes (Idle, Wake, Standby) ◆ Two comparators ◆ ADC reference (1 internal, 3 external) ◆ 48 ×4 LCD module ◆ Three DMA channels ◆ Two UARTs, two SPIs ◆ DigitBus master module ◆ Two CAN modules with 512 Bytes each of object RAM according to Bosch specification V2.0B (32 message objects) ◆ Pulse frequency modulator ◆ Sound generator with auto decay ◆ Two SW-selectable clock outputs ◆ 16-bit free-running counter with six capture/compare modules ◆ Patch module (up to 10 cells) ◆ Device lock module (DLM) inhibiting Flash access ◆ 1 ×16-bit timer and 4×8-bit timer ◆ JTAG interface ◆ −40 to +105 °C case temperature range ◆ Single 3.5 V to 5.5 V supply voltage (limited I/O performance below 4.5 V) ◆ Up to 102 GPIOs ◆ 128-pin PQFP package, 0.5 mm pin pitch PRODUCT INFORMATION CDC 3257G May/2005 Development Tools ◆ Evaluation chip CDC 3205G featuring JTAG Probe – ETM via embedded emulation JTAG – ROM/Flash emulation with external SRAM (up to 8 MBytes) JTAG JTAG ETM Trace Probe ◆ Evaluation Board (EVB) including the CDC 3205G for evaluation and debugging of embedded systems ◆ Application Board (APB) for Flash memory programming EVB Logic Analyzer ◆ Probe for PQFP128 ◆ Software environment (compiler, linker, assembler) from 3rd party vendors ◆ RTOS from 3rd party vendors Fig. 1: Development tool setup ◆ CAN protocol stacks System Architecture The Car Dashboard Controller CDC 3257G contains an embedded ARM7TDMI processor which operates at a maximum clock frequency of 50 MHz. 32 PLL/ERM RTC 12 KB SRAM Power Saving DMA Contr. P0.6 Comp Bus Controller Bandgap Ref. JTAG Interface Test / Debug Patch Module Bridge 10-Bit ADC 256 KB Flash 8 KB Boot ROM UARTS 16Bit CCC 0 1UARTS × 16-Bit Timer UARTS CAPCOM 0,1,2,3 4UARTS × 8-Bit Timer UARTS 2 × UART UARTS LCD Control UARTS 2 × SPI UARTS Audio Module UARTS 2 × CAN UARTS Clock Out 0,1 UARTS 16Bit CCC 1 UARTS DIGITBus PFM 0/1 UARTS CAPCOM 4, 5 7 × Stepper Motor Module 6 UARTS × 8/16-Bit PWM UPorts The 16/32-bit bus connects to Flash and boot ROM. All other peripherals are connected to the I/O bus. All I/O ports have multiple functions to obtain utmost flexibility. A total of 102 GPIOs can be selected. HPorts ◆ DMA Test Watchdog Clock 40-Input Interrupt Controller 2.5-V Reg. Wait Comp ◆ SRAM Reset VDD VSS 2.5-V Reg. ARM7TDMI CPU VREFINT VREF AVDD AVSS BVDD 18 3.3-V Reg. Bridge ◆ ICU (Interrupt Control Unit) FVDD FVSS PPorts The internal high-speed bus connects the following peripherals to the ARM7TDMI processor: UVDD UVSS 52 2UARTS × I²C Bus The built-in ERM delivers superb EMI results reducing the peak values by up to 10 dBµV. The CDC 3257G is fully pin- and softwarecompatible with all other members of the CDC 32xxG family. Fig. 2: Block diagram of the CDC 3257G All information and data contained in this product information are without any commitment, are not to be considered as an offer for conclusion of a contract, nor shall they be construed as to create any liability. Product or development sample availability and delivery are exclusively subject to our respective order confirmation form. By this publication, Micronas GmbH does not assume responsibility for patent infringements or other rights of third parties which may result from its use. No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted without the express written consent of Micronas GmbH. Edition May 18, 2005; Order No. 6251-634-1PI Micronas GmbH ⋅ Hans-Bunte-Strasse 19 ⋅ D-79108 Freiburg (Germany) ⋅ P.O. Box 840 ⋅ D-79008 Freiburg (Germany) Tel. +49-761-517-0 ⋅ Fax +49-761-517-2174 ⋅ E-mail: [email protected] ⋅ www.micronas.com