ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 105

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

ST7260xx
15.1.7
15.2
Table 51.
Relative mode (direct, indirect)
This addressing mode is used to modify the PC register value by adding an 8-bit signed
offset to it.
Table 52.
The relative addressing mode consists of two sub-modes:
Relative (direct)
The offset follows the opcode.
Relative (indirect)
The offset is defined in memory, of which the address follows the opcode.
Instruction groups
The ST7 family devices use an Instruction Set consisting of 63 instructions. The instructions
may be subdivided into 13 main groups as illustrated in the following table:
Long and short instructions
Short instructions only
Instructions supporting direct, indexed, indirect and indirect indexed
addressing modes
Available relative direct/indirect instructions
Instructions
CALLR
JRxx
Instructions
LD
CP
AND, OR, XOR
ADC, ADD, SUB, SBC
BCP
CLR
INC, DEC
TNZ
CPL, NEG
BSET, BRES
BTJT, BTJF
SLL, SRL, SRA, RLC, RRC
SWAP
CALL, JP
Load
Compare
Logical Operations
Arithmetic Addition/subtraction
operations
Bit Compare
Clear
Increment/Decrement
Test Negative or Zero
1 or 2 Complement
Bit Operations
Bit Test and Jump Operations
Shift and Rotate Operations
Swap Nibbles
Call or Jump subroutine
Conditional Jump
Call Relative
Function
Function
Instruction set
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