ST62T28CM6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST62T28CM6

8-BIT MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, UART, OSG, SAFE RESET AND 28-PIN PACKAGE

STMicroelectronics 

ST62T28C/E28C

INSTRUCTION SET (Cont’d)

Conditional Branch. The branch instructions

achieve a branch in the program when the select-

ed condition is met.

Control Instructions. The control instructions

control the MCU operations during program exe-

cution.

Bit Manipulation Instructions. These instruc-

tions can handle any bit in data space memory.

One group either sets or clears. The other group

(see Conditional Branch) performs the bit test

branch operations.

Table 22. Conditional Branch Instructions

Instruction

Branch If

Bytes

JRC e

C=1

1

JRNC e

C=0

1

JRZ e

Z=1

1

JRNZ e

Z=0

1

JRR b, rr, ee

Bit = 0

3

JRS b, rr, ee

Bit = 1

3

Notes:

b. 3-bit address

e. 5 bit signed displacement in the range -15 to +16<F128M>

ee. 8 bit signed displacement in the range -126 to +129

Table 23. Bit Manipulation Instructions

Instruction

Addressing Mode

SET b,rr

RES b,rr

Bit Direct

Bit Direct

Notes:

b. 3-bit address;

rr. Data space register;

Bytes

2

2

Jump and Call. These two instructions are used

to perform long (12-bit) jumps or subroutines call

inside the whole program space.

Cycles

2

2

2

2

5

5

Flags

Z

C

*

*

*

*

*

*

*

*

*

∆

*

∆

rr. Data space register

∆ . Affected. The tested bit is shifted into carry.

* . Not Affected

Cycles

4

4

* . Not<M> Affected

Flags

Z

C

*

*

*

*

Table 24. Control Instructions

Instruction

NOP

RET

RETI

STOP (1)

WAIT

Addressing Mode

Inherent

Inherent

Inherent

Inherent

Inherent

Bytes

1

1

1

1

1

Cycles

2

2

2

2

2

Flags

Z

C

*

*

*

*

∆

∆

*

*

*

*

Notes:

1. This instruction is deactivated<N>and a WAIT is automatically executed instead of a STOP if the watchdog function is selected.

∆ . Affected

*. Not Affected

Table 25. Jump & Call Instructions

Instruction

CALL abc

JP abc

Addressing Mode

Extended

Extended

Bytes

2

2

Cycles

4

4

Flags

Z

C

*

*

*

*

Notes:

abc. 12-bit address;

* . Not Affected

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