P80C562 Philips Semiconductors, P80C562 Datasheet - Page 10

• Manufacturer Part Number: P80C562
• Description: 8-bit microcontroller
• Manufacturer: Philips Semiconductors

Philips Semiconductors
8.2
The P8xC562 has five methods for addressing source
operands:
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:
1997 Apr 08
handbook, full pagewidth
Register
Direct
Register-Indirect
Immediate
Base-Register plus Index-Register-Indirect.
Registers in one of the four 8-register banks through
Register, Direct or Register-Indirect
8-bit microcontroller
Addressing
8191
0
INTERNAL
(EA = 1)
8192
64K
PROGRAM MEMORY
EXTERNAL
8191
0
EXTERNAL
(EA = 0)
Fig.4 Memory map.
255
127
0
10
INDIRECT ONLY
DIRECT AND
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.
INDIRECT
INTERNAL DATA MEMORY
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.
OVERLAPPED SPACE
REGISTERS
FUNCTION
SPECIAL
P83C562; P80C562
MBC745
64K
0
DATA MEMORY
Product specification
EXTERNAL