ST62P20CL3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST62P20CL3

8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, OSCILLATOR SAFEGUARD, SAFE RESET AND 20 PINS

STMicroelectronics 

ST62T08C/T09C ST62T10C/T20C/E20C

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 16. 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 17. Bit Manipulation Instructions

Instruction

Addressing Mode

Bytes

SET b,rr

Bit Direct

2

RES b,rr

Bit Direct

2

Notes:

b. 3-bit address;

rr. Data space register;

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 18. 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 19. Jump & Call Instructions

Instruction

Addressing Mode

CALL abc

JP abc

Notes:

abc. 12-bit address;

* . Not Affected

Extended

Extended

Bytes

2

2

Cycles

4

4

Flags

Z

C

*

*

*

*

45/70

133

Share Link: