KS57C2308/P2308/C2316/P2316
SAM47 INSTRUCTION SET
5-31
BITR
— Bit Reset
BITR
dst.b
Operation:
Operand
Operation Summary
Bytes
Cycles
DA.b
Clear specified memory bit to logic zero
2
2
mema.b
2
2
memb.@L
2
2
@H+DA.b
2
2
Description:
A BITR instruction clears to logic zero (resets) the specified bit within the destination operand. No
other bits in the destination are affected.
Operand
Binary Code
Operation Notation
DA.b
1
1
b1
b0
0
0
0
0
DA.b
←
0
a7
a6
a5
a4
a3
a2
a1
a0
mema.b
*
1
1
1
1
1
1
1
0
mema.b
←
0
memb.@L
1
1
1
1
1
1
1
0
[memb.7–2 + L3–2].[L.1–0]
←
0
0
1
0
0
a5
a4
a3
a2
@H+DA.b
1
1
1
1
1
1
1
0
[H + DA.3–0].b
←
0
0
0
b1
b0
a3
a2
a1
a0
Second Byte
Bit Addresses
*
mema.b
1
0
b1
b0
a3
a2
a1
a0
FB0H–FBFH
1
1
b1
b0
a3
a2
a1
a0
FF1H–FF9H
Examples:
1. If the bit location 30H.2 in the RAM has a current value of “1”. The following instruction
clears the third bit of location 30H to “0”:
BITR
30H.2
; 30H.2
←
"0"
2. You can use BITR in the same way to manipulate a port address bit:
BITR
P2.0
; P2.0
←
"0"
Summary of Contents for C2316
Page 30: ...ADDRESS SPACES KS57C2308 P2308 C2316 P2316 2 22 NOTES ...
Page 168: ...SAM47 INSTRUCTION SET KS57C2308 P2308 C2316 P2316 5 94 NOTES ...
Page 170: ......
Page 206: ...POWER DOWN KS57C2308 P2308 C2316 P2316 8 8 NOTES ...
Page 210: ...RESET KS57C2308 P2308 C2316 P2316 9 4 NOTES ...
Page 222: ...I O PORTS KS57C2308 P2308 C2316 P2316 10 12 NOTES ...
Page 272: ...LCD CONTROLLER DRIVER KS57C2308 P2308 C2316 P2316 12 24 NOTES ...
Page 280: ...SERIAL I O INTERFACE KS57C2308 P2308 C2316 P2316 13 8 NOTES ...
Page 294: ...MECHANICAL DATA KS57C2308 P2308 C2316 P2316 15 2 NOTES ...
Page 310: ...KS57P2308 P2316 OTP KS57C2308 P2308 C2316 P2316 16 16 NOTES ...
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