[ label ] RETURN [s] Operands: s " />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� PIC18F4439T-E/PT
寤犲晢锛� Microchip Technology
鏂囦欢闋佹暩(sh霉)锛� 163/322闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC PIC MCU FLASH 6KX16 44TQFP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 1,200
绯诲垪锛� PIC® 18F
鏍稿績铏曠悊鍣細 PIC
鑺珨灏哄锛� 8-浣�
閫熷害锛� 40MHz
閫i€氭€э細 I²C锛孲PI锛孶ART/USART
澶栧湇瑷�(sh猫)鍌欙細 娆犲妾㈡脯/寰�(f霉)浣�锛孡VD锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 32
绋嬪簭瀛樺劜鍣ㄥ閲忥細 12KB锛�6K x 16锛�
绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 闁冨瓨
EEPROM 澶�?銆�?/td> 256 x 8
RAM 瀹归噺锛� 640 x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 4.2 V ~ 5.5 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 8x10b
鎸暕鍣ㄥ瀷锛� 鍏�(n猫i)閮�
宸ヤ綔婧害锛� -40°C ~ 125°C
灏佽/澶栨锛� 44-TQFP
鍖呰锛� 甯跺嵎 (TR)
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2002 Microchip Technology Inc.
Preliminary
DS30485A-page 243
PIC18FXX39
RETURN
Return from Subroutine
Syntax:
[ label ] RETURN [s]
Operands:
s
鈭� [0,1]
Operation:
(TOS)
鈫� PC,
if s = 1
(WS)
鈫� W,
(STATUSS)
鈫� STATUS,
(BSRS)
鈫� BSR,
PCLATU, PCLATH are unchanged
Status Affected:
None
Encoding:
0000
0001
001s
Description:
Return from subroutine. The stack
is popped and the top of the stack
(TOS) is loaded into the program
counter. If 鈥榮鈥�= 1, the contents of the
shadow registers WS, STATUSS
and BSRS are loaded into their cor-
responding registers, W, STATUS
and BSR. If 鈥榮鈥� = 0, no update of
these registers occurs (default).
Words:
1
Cycles:
2
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
No
operation
Process
Data
pop PC from
stack
No
operation
No
operation
No
operation
No
operation
Example:
RETURN
After Interrupt
PC = TOS
RLCF
Rotate Left f through Carry
Syntax:
[ label ]
RLCF
f [,d [,a]
Operands:
0
鈮� f 鈮� 255
d
鈭� [0,1]
a
鈭� [0,1]
Operation:
(f<n>)
鈫� dest<n+1>,
(f<7>)
鈫� C,
(C)
鈫� dest<0>
Status Affected:
C, N, Z
Encoding:
0011
01da
ffff
Description:
The contents of register 'f' are
rotated one bit to the left through
the Carry Flag. If 'd' is 0, the result
is placed in W. If 'd' is 1, the result
is stored back in register 'f'
(default). If 鈥榓(ch菐n)鈥� is 0, the Access
Bank will be selected, overriding
the BSR value. If 鈥榓(ch菐n)鈥� = 1, then the
bank will be selected as per the
BSR value (default).
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
Data
Write to
destination
Example:
RLCF
REG, 0, 0
Before Instruction
REG
=
1110 0110
C=
0
After Instruction
REG
=
1110 0110
W=
1100 1100
C=
1
C
register f
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