PCM18XK1 Microchip Technology, PCM18XK1 Datasheet - Page 382

• Manufacturer Part Number: PCM18XK1
• Description: MODULE PROC PIC18F8680,6680,8565
• Manufacturer: Microchip Technology

Specifications of PCM18XK1

• Accessory Type: Processor Module
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICE2000
• For Use With: ICE2000 - EMULATOR MPLAB-ICE 2000 POD
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F6585/8585/6680/8680
BZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS30491C-page 380
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
PC
If Zero
If Zero
No
Q1
Q1
PC
PC
Read literal
Read literal
=
=
=
=
=
operation
Branch if Zero
[ label ] BZ
-128
if Zero bit is ‘1’
(PC) + 2 + 2n
None
If the Zero bit is ‘1’, then the
program will branch.
The 2’s complement number ‘2n’ is
added to the PC. Since the PC will
have incremented to fetch the next
instruction, the new address will be
PC+2+2n. This instruction is then
a two-cycle instruction.
1
1(2)
HERE
1110
No
Q2
‘n’
Q2
‘n’
address (HERE)
1;
address (Jump)
0;
address (HERE+2)
n
127
0000
operation
BZ
Process
Process
n
Data
Data
No
Q3
Q3
PC
Jump
nnnn
Write to PC
operation
operation
No
No
Q4
Q4
nnnn
CALL
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
1st word (k<7:0>)
2nd word(k<19:8>)
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
operation
Decode
PC
PC
TOS
WS
BSRS
STATUSS =
No
Q1
Read literal
operation
‘k’<7:0>,
Subroutine Call
[ label ] CALL k [,s]
0
s
(PC) + 4
k
if s = 1
(W)
(STATUS)
(BSR)
None
Subroutine call of entire 2-Mbyte
memory range. First, return
address (PC+ 4) is pushed onto the
return stack. If ‘s’ = 1, the W,
Status and BSR registers are also
pushed into their respective
shadow registers, WS, STATUSS
and BSRS. If ‘s’ = 0, no update
occurs (default). Then, the 20-bit
value ‘k’ is loaded into PC<20:1>.
CALL is a two-cycle instruction.
2
2
HERE
=
=
=
=
=
1110
1111
No
Q2
k
[0,1]
 2004 Microchip Technology Inc.
PC<20:1>,
address (HERE)
address (THERE)
address (HERE + 4)
W
BSR
STATUS
WS,
1048575
BSRS
k
110s
Push PC to
CALL
19
TOS,
operation
kkk
STATUSS,
stack
No
Q3
THERE,1
k
kkkk
7
kkk
Read literal
Write to PC
‘k’<19:8>,
operation
No
Q4
kkkk
kkkk
0
8