P80C562 查看數據表（PDF） - Philips Electronics
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P80C562 Datasheet PDF : 52 Pages
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Philips Semiconductors
8-bit microcontroller
Product specification
P83C562; P80C562
8.2 Addressing
The P8xC562 has five methods for addressing source
operands:
• Register
• Direct
• Register-Indirect
• Immediate
• Base-Register plus Index-Register-Indirect.
The first three methods can be used for addressing
destination operands. Most instructions have a
'destination/source' field that specifies the data type,
addressing methods and operands involved.
For operations other than MOVs, the destination operand
is also a source operand.
Access to memory addressing is as follows:
• Registers in one of the four 8-register banks through
Register, Direct or Register-Indirect
• 256 bytes of internal data RAM through Direct or
Register-Indirect. Bytes 0 to 127 may be addressed
directly/indirectly. Bytes 128 to 155 share their address
locations with the SFR registers and so may only be
addressed indirectly as data RAM
• Special Function Registers through Direct at address
locations 128 to 255
• External data memory through Register-Indirect
• Program memory look-up tables through Base-Register
plus Index-Register-Indirect.
The P8xC562 is classified as an 8-bit device since the
internal ROM, RAM, Special Function Registers,
Arithmetic Logic Unit and external data bus are all 8-bits
wide. It performs operations on bit, nibble, byte and
double-byte data types.
Facilities are available for byte transfer, logic and integer
arithmetic operations. Data transfer, logic and conditional
branch operations can be performed directly on Boolean
variables to provide excellent bit handling.
handbook, full pagewidth
64K
EXTERNAL
64K
8192
8191
8191
INTERNAL
(EA = 1)
EXTERNAL
(EA = 0)
0
0
PROGRAM MEMORY
OVERLAPPED SPACE
255
INDIRECT ONLY
127
SPECIAL
FUNCTION
REGISTERS
DIRECT AND
INDIRECT
0
0
INTERNAL DATA MEMORY
MBC745
EXTERNAL
DATA MEMORY
1997 Apr 08
Fig.4 Memory map.
10
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