CDC3257G Datasheet, PDF (2/2 Pages) Micronas – CDC 3257G ARM7-Based Car Dashboard Controller

PRODUCT INFORMATION
CDC 3257G
May/2005
Development Tools
◆ Evaluation chip CDC 3205G featuring
– ETM via embedded emulation JTAG
– ROM/Flash emulation with external
SRAM (up to 8 MBytes)
◆ Evaluation Board (EVB) including the
CDC 3205G for evaluation and debug-
ging of embedded systems
◆ Application Board (APB) for Flash mem-
ory programming
◆ Probe for PQFP128
◆ Software environment (compiler, linker,
assembler) from 3^rd party vendors
◆ RTOS from 3^rd party vendors
◆ CAN protocol stacks
JTAG
Probe
ETM
Trace Probe
Logic Analyzer
Fig. 1: Development tool setup
JTAG
JTAG
EVB
System Architecture
The Car Dashboard Controller CDC 3257G
contains an embedded ARM7TDMI proces-
sor which operates at a maximum clock fre-
quency of 50 MHz.
The internal high-speed bus connects the
following peripherals to the ARM7TDMI pro-
cessor:
◆ ICU (Interrupt Control Unit)
◆ SRAM
◆ DMA
The 16/32-bit bus connects to Flash and
boot ROM. All other peripherals are con-
nected to the I/O bus. All I/O ports have
multiple functions to obtain utmost flexibility.
A total of 102 GPIOs can be selected.
VREFINT
VREF
AVDD
AVSS
BVDD
18
UVDD
UVSS
FVDD
FVSS
3.3-V Reg.
2.5-V Reg.
2.5-V Reg.
ARM7TDMI
CPU
Wait Comp
P0.6 Comp
Bandgap Ref.
10-Bit ADC
DMA Contr.
Bus Controller
Bridge
VDD
VSS
40-Input
Interrupt Controller
12 KB SRAM
256 KB Flash
8 KB Boot ROM
Patch Module
Reset
Test
Watchdog Clock
PLL/ERM
RTC
Power Saving
JTAG Interface
Test / Debug
U₂A_×R_UT_AS_RT
L^UC^AD^RC^To^Sntrol
7 × Stepper Motor
Module
1^U6-^AB^Rit C^TC^SC 0
1^U× 1^A6^R-B^Tit T^Simer
32
U₂A_×R_ST_PS_I
A^Uud^Aio^RM^To^Sdule ₆ U_{× 8}A_/1R_6-T_BiS_{t PWM} C^UAP^AC^ROM^TS0,1,2,3 4^U×^A8-^RBi^Tt T^Simer
52
U₂ A_× R_CT_AS_N
C^Ulo^Ack^RO^Tu^St 0,1
1^U6-^AB^Rit C^TC^SC 1
U_DA_IGR_ITT_BS_us
PFM 0/1
U_CAA_PR_COT_MS_4,5
2^U×^AI^R²C^TB^Sus
The built-in ERM delivers superb EMI
results reducing the peak values by up to
10 dBµV.
The CDC 3257G is fully pin- and software-
compatible 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 consid-
ered 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, photo-
copied, stored on a retrieval system, or transmitted
without the express written consent of Micronas GmbH.
Edition May 18, 2005; Order No. 6251-634-1PI
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