HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 21

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HD6433308

Manufacturer Part Number
HD6433308
Description
Hitachi Single-Chip MicroComputer
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet

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1.2 Descriptions of Blocks
CPU: The CPU has a high-speed-oriented architecture in which operands are located in general registers.
ROM: The 16K-byte on-chip ROM is accessed in two states via a 16-bit bus. Three versions are
available:
RAM: The 512-byte on-chip RAM is accessed in two states via a 16-bit bus. RAM contents are
held in the power-down state.
Dual-Port RAM: In single-chip mode, the 15 bytes of dual-port memory can be accessed by both
the on-chip CPU and an external CPU for convenient parallel data transfer in master-slave systems.
Serial Communication Interface: The single serial I/O channel offers:
Masked ROM
Electrically programmable ROM, programmable with a standard PROM writer
No ROM
Synchronous or asynchronous communication
Separate input/output pins for the synchronous and asynchronous modes
An on-chip baud rate generator supporting up to megabit-per-second speeds
Serial clock input or output
Two-way general register configuration
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Streamlined instruction set
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Eight 16-bit registers, or
Sixteen 8-bit registers
Instruction length: 2 or 4 bytes
Register-register arithmetic, logic, and shift operations, including:
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Extensive bit-manipulation instructions, featuring:
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Maximum clock rate: 10MHz
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8 8-bit multiply
16 ÷ 8-bit divide
Bit accumulator
Register-indirect specification of bit positions
Register-register add or subtract: 0.2µs
Register-register multiply or divide: 1.4µs
3

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