參數(shù)資料
型號: P80C562
廠商: NXP Semiconductors N.V.
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數(shù): 10/52頁
文件大?。?/td> 299K
代理商: P80C562
1997 Apr 08
10
Philips Semiconductors
Product specification
8-bit microcontroller
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.
Fig.4 Memory map.
handbook, full pagewidth
MBC745
INDIRECT ONLY
DIRECT AND
INDIRECT
255
127
0
EXTERNAL
(EA = 0)
INTERNAL
(EA = 1)
INTERNAL DATA MEMORY
EXTERNAL
DATA MEMORY
PROGRAM MEMORY
EXTERNAL
64K
64K
8192
8191
0
OVERLAPPED SPACE
0
8191
0
SPECIAL
FUNCTION
REGISTERS
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