HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 29
HD6417034B
Manufacturer Part Number
HD6417034B
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417034B.pdf
(687 pages)
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Quantity
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Part Number:
HD6417034BVFN20
Manufacturer:
RENESAS
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101
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HD6417034BVFW20
Manufacturer:
MITSUBISHI
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Manufacturer:
Renesas Electronics America
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Feature
Interrupt controller
(INTC)
User break controller
(UBC)
Clock pulse generator
(CPG)
Bus state controller
(BSC)
Description
Nine external interrupt pins (NMI, IRQ0–IRQ7)
Thirty-one internal interrupt sources
Sixteen programmable priority levels
Generates an interrupt when the CPU or DMAC generates a bus cycle
with specified conditions
Simplifies configuration of an on-chip debugger
On-chip clock pulse generator (maximum operating frequency: 20 MHz):
20-MHz pulses can be generated from a 20-MHz crystal with a duty cycle
Supports external memory access:
Sixteen-bit external data bus
Address space divided into eight areas with the following preset features:
Bus size (8 or 16 bits)
Number of wait cycles can be defined by user.
Type of area (external memory area, DRAM area, etc.)
When the DRAM area is accessed:
Chip select signals (CS0 to CS7) are output for each area
DRAM refresh function:
Programmable refresh interval
Supports CAS-before-RAS refresh and self-refresh modes
DRAM burst access function:
Supports high-speed access modes for DRAM
Wait cycles can be inserted by an external WAIT signal
One-stage write buffer improves the system performance
Data bus parity can be generated and checked
correcting circuit
Simplifies connection to ROM, SRAM, DRAM, and peripheral I/O
RAS and CAS signals for DRAM are output
Tp cycles can be generated to assure RAS precharge time
Address multiplexing is supported internally, so DRAM can be
connected directly
Rev. 7.00 Jan 31, 2006 page 3 of 658
Section 1 Overview
REJ09B0272-0700
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