4501 datasheet(82/212 Pages) RENESAS

82 / 212 page

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

INSTRUCTIONS

1-70

Rev.2.01

Feb 07, 2005

4501 Group

HARDWARE

REJ09B0192-0201

OP2A (Output port P2 from Accumulator)

1000100010

222

–

Grouping:

Input/Output operation

Description: Outputs the contents of the low-order 2 bits

(A1, A0) of register A to port P2.

Operation:

(P21, P20)

← (A1, A0)

OR (logical OR between accumulator and memory)

0000011001

019

–

Grouping:

Arithmetic operation

Description: Takes the OR operation between the con-

tents of register A and the contents of

M(DP), and stores the result in register A.

Operation:

(A)

← (A) OR (M(DP))

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

POF (Power OFf1)

0000000010

002

–

Grouping:

Other operation

Description: Puts the system in RAM back-up state by

executing the POF instruction after execut-

ing the EPOF instruction.

However, the voltage drop detection circuit

is valid.

Note:

If the EPOF instruction is not executed before

executing this instruction, this instruction is

equivalent to the NOP instruction.

POF2 (Power OFf2)

0000001000

008

–

Grouping:

Other operation

Description: Puts the system in RAM back-up state by

executing the POF2 instruction after ex-

ecuting the EPOF instruction. Operations of

all functions are stopped.

Note:

If the EPOF instruction is not executed be-

fore executing this instruction, this

instruction is equivalent to the NOP instruc-

tion.

Operation:

RAM back-up

Operation:

RAM back-up

However, voltage drop detection circuit valid

4501 Datasheet(PDF) 82 Page - Renesas Technology Corp

4501 Datasheet(HTML) 82 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL