AC164139 Microchip Technology, AC164139 Datasheet - Page 287
![Graphics Display Prototype Board Graphics](/photos/28/36/283699/ac164139_sml.jpg)
AC164139
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AC164139
Manufacturer:
Microchip Technology
Quantity:
135
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20.1.3
REGISTER 20-1:
2010 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9-8
Note 1:
RTCEN
R/W-0
R/W-0
CAL7
2:
3:
(2)
The RCFGCAL register is only affected by a POR.
A write to the RTCEN bit is only allowed when RTCWREN = 1.
This bit is read-only. It is cleared to ‘0’ on a write to the lower half of the MINSEC register.
RTCC CONTROL REGISTERS
RTCEN: RTCC Enable bit
1 = RTCC module is enabled
0 = RTCC module is disabled
Unimplemented: Read as ‘0’
RTCWREN: RTCC Value Registers Write Enable bit
1 = RTCVALH and RTCVALL registers can be written to by the user
0 = RTCVALH and RTCVALL registers are locked out from being written to by the user
RTCSYNC: RTCC Value Registers Read Synchronization bit
1 = RTCVALH, RTCVALL and ALCFGRPT registers can change while reading due to a rollover ripple
0 = RTCVALH, RTCVALL or ALCFGRPT registers can be read without concern over a rollover ripple
HALFSEC: Half-Second Status bit
1 = Second half period of a second
0 = First half period of a second
RTCOE: RTCC Output Enable bit
1 = RTCC output is enabled
0 = RTCC output is disabled
RTCPTR<1:0>: RTCC Value Register Window Pointer bits
Points to the corresponding RTCC Value registers when reading the RTCVALH and RTCVALL registers.
The RTCPTR<1:0> value decrements on every read or write of RTCVALH until it reaches ‘00’.
RTCVAL<15:8>:
11 = Reserved
10 = MONTH
01 = WEEKDAY
00 = MINUTES
RTCVAL<7:0>:
11 = YEAR
10 = DAY
01 = HOURS
00 = SECONDS
R/W-0
CAL6
resulting in an invalid data read. If the register is read twice and results in the same data, the data
can be assumed to be valid.
U-0
—
RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER
HSC = Hardware Settable/Clearable bit
W = Writable bit
‘1’ = Bit is set
RTCWREN
R/W-0
R/W-0
CAL5
(2)
RTCSYNC
R-0, HSC
PIC24FJ256DA210 FAMILY
R/W-0
CAL4
(3)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
HALFSEC
R-0, HSC
R/W-0
CAL3
(3)
RTCOE
R/W-0
R/W-0
CAL2
x = Bit is unknown
R/W-0, HSC R/W-0, HSC
RTCPTR1
R/W-0
CAL1
DS39969B-page 287
(1)
RTCPTR0
R/W-0
CAL0
bit 8
bit 0
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