S3C72G9 Samsung semiconductor, S3C72G9 Datasheet - Page 32

• Manufacturer Part Number: S3C72G9
• Description: The S3C72G9 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core/ SAM47 (Samsung Arrangeable M
• Manufacturer: Samsung semiconductor

 



BITR
Operation:
Description:
Examples:



dst.b
DA.b
mema.b
memb.@L
@H+DA.b
A BITR instruction clears to logic zero (resets) the specified bit within the destination operand. No
other bits in the destination are affected.
DA.b
mema.b
memb.@L
@H+DA.b
1. If the Bit location 30H.2 in the RAM has a current value of "1". The following instruction
2. You can use BITR in the same way to manipulate a port address bit:


Operand
Operand
clears the third bit of location 30H to "0":
BITR
BITR
mema.b




Clear specified memory bit to logic zero
30H.2
P0.0
a7
1
1
1
0
1
0
1
1
a6
1
1
1
1
1
0
0
1
b1
a5
b1
b1
b1
1
1
0
1
Second Byte
Binary Code
Operation Summary
b0
a4
b0
b0
b0
1
1
0
1
; 30H.2
; P0.0
a3
a5
a3
a3
a3
0
1
1
1
a2
a4
a2
a2
a2
0
1
1
1
"0"
a1
a3
a1
a1
a1
0
1
1
1
"0"
a0
a2
a0
a0
a0
0
0
0
0
DA.b
mema.b
[memb.7-2 + L3-2].[L.1-0]
[H + DA.3-0].b
FB0H-FBFH
FF0H-FFFH
Operation Notation
0
Bit Addresses
0
Bytes
0
2
2
2
2

 
Cycles
0
2
2
2
2