AC164139 Microchip Technology, AC164139 Datasheet - Page 42

• Manufacturer Part Number: AC164139
• Description: Graphics Display Prototype Board Graphics
• Manufacturer: Microchip Technology

Specifications of AC164139

• Main Purpose: LCD Development
• Embedded: No
• Utilized Ic / Part: PICtail™ Plus Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC24FJ256DA210 FAMILY
3.2
REGISTER 3-1:
DS39969B-page 42
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-9
bit 8
bit 7-5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1:
R/W-0, HSC
IPL2
U-0
—
2:
CPU Control Registers
(2)
The IPL Status bits are read-only when NSTDIS (INTCON1<15>) = 1.
The IPL Status bits are concatenated with the IPL3 (CORCON<3>) bit to form the CPU Interrupt Priority
Level (IPL). The value in parentheses indicates the IPL when IPL3 = 1.
(1)
R/W-0, HSC
Unimplemented: Read as ‘0’
DC: ALU Half Carry/Borrow bit
1 = A carry out from the 4
0 = No carry out from the 4
IPL<2:0>: CPU Interrupt Priority Level Status bits
111 = CPU interrupt priority level is 7 (15); user interrupts are disabled
110 = CPU interrupt priority level is 6 (14)
101 = CPU interrupt priority level is 5 (13)
100 = CPU interrupt priority level is 4 (12)
011 = CPU interrupt priority level is 3 (11)
010 = CPU interrupt priority level is 2 (10)
001 = CPU interrupt priority level is 1 (9)
000 = CPU interrupt priority level is 0 (8)
RA: REPEAT Loop Active bit
1 = REPEAT loop in progress
0 = REPEAT loop not in progress
N: ALU Negative bit
1 = Result was negative
0 = Result was not negative (zero or positive)
OV: ALU Overflow bit
1 = Overflow occurred for signed (2’s complement) arithmetic in this arithmetic operation
0 = No overflow has occurred
Z: ALU Zero bit
1 = An operation, which affects the Z bit, has set it at some time in the past
0 = The most recent operation, which affects the Z bit, has cleared it (i.e., a non-zero result)
C: ALU Carry/Borrow bit
1 = A carry out from the Most Significant bit of the result occurred
0 = No carry out from the Most Significant bit of the result occurred
IPL1
of the result occurred
SR: ALU STATUS REGISTER
U-0
—
(2)
(1)
W = Writable bit
R/W-0, HSC
HSC = Hardware Settable/Clearable bit
‘1’ = Bit is set
IPL0
U-0
—
(2)
th
low-order bit (for byte-sized data) or 8
th
(1)
or 8
R-0, HSC R/W-0, HSC R/W-0, HSC R/W-0, HSC R/W-0, HSC
th
U-0
RA
low-order bit of the result has occurred
—
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
—
N
(1,2)
U-0
OV
—
th
low-order bit (for word-sized data)
 2010 Microchip Technology Inc.
x = Bit is unknown
U-0
—
Z
R/W-0, HSC
DC
C
bit 8
bit 0