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ST40RA150XHA Datasheet(PDF) 9 Page - STMicroelectronics

Part # ST40RA150XHA
Description  32-bit Embedded SuperH Device
Download  94 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST40RA150XHA Datasheet(HTML) 9 Page - STMicroelectronics

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4 Architecture
ST40RA
9/94
STMicroelectronics
ADCS 7260755H
Debug controller
Debugging is performed by break interrupts. There are two break channels. The address, data
value, access type, and data size can all be set as break conditions. Sequential break functions are
supported.
The user debug interface (UDI) contains a five-pin serial interface conforming to JTAG, IEEE
Standard TAP and boundary scan architecture. The interface provides host access to the 1 Kbyte
ASERAM for emulator firmware (accessible only in ASE mode).
Timers
The three-channel, auto-reload, 32-bit timer has an input capture function and a choice of seven
counter input clocks.
Real-time clock
The built-in 32-kHz crystal oscillator has a maximum 1/256 second resolution. It has dynamically
programmable operating frequencies and on-chip clock and calendar functions. It has two sleep
modes and one standby mode.
Watchdog timer
The ST40RA has an 8-bit watchdog timer (WDT) with programmable clock ratio. The WDT is able
to generate a power-on reset or a manual reset.
Programmable PLLs
The ST40RA has three programmable PLLs. The PLLs are configured by MODE pins at reset and
then reconfigured by software to optimize system performance or reduce system power
consumption.
General-purpose DMA controller
The five-channel physical address GPDMA controller has four general-purpose channels for
memory-to-memory or memory-to-peripheral transfers, and one buffered multiplexed channel. Both
2-D block moves and linked lists are supported. Two sets of DMA handshake pins are available for
use by external devices to support efficient transfer interdevice transfers via external interfaces
such as the EMI MPX.
Parallel I/O module
24 bits of parallel I/O are provided from the ST40 compatible PIO. Each bit is programmable as an
output or an input. “Input compare” generates an interrupt on any change of any input bit.
4.3
Bus interfaces
4.3.1
Local memory interface
The LMI supports 16-, 32- and 64-bit wide bus SDRAM and DDR SDRAM, at up to 100 MHz with a
maximum address space of 112 Mbytes. Devices supported include two and four bank 16-, 64-,
128- and 256-Mbit technologies in x4, x8, x16 and x32 packages. The LMI pads are dual mode
pads electrically compatible with LVTTL (for standard SDRAM) and SSTL_2 (for DDR SDRAM). For
full detail of the configuration options of the LMI please see
ST40 System Architecture Manual,
Volume 2: Bus Interfaces.


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