DSPIC33FJ16GP101-I/SS Microchip Technology, DSPIC33FJ16GP101-I/SS Datasheet - Page 214
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DSPIC33FJ16GP101-I/SS
Manufacturer Part Number
DSPIC33FJ16GP101-I/SS
Description
16-bit DSC Family, 16 MIPS, 16KB Flash, 1KB RAM 20 SSOP .209in TUBE
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr
Datasheet
1.DSPIC33FJ16GP101-IP.pdf
(322 pages)
Specifications of DSPIC33FJ16GP101-I/SS
Processor Series
dsPIC33F
Core
dsPIC
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
16 KB
Interface Type
SPI, I2C, UART, JTAG
Number Of Programmable I/os
35
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Development Tools By Supplier
MPLAB IDE Software
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 13 Channel
Core Processor
dsPIC
Core Size
16-Bit
Speed
16 MIPs
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
13
Eeprom Size
-
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SSOP (0.209", 5.30mm Width)
Lead Free Status / Rohs Status
Details
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dsPIC33FJ16GP101/102 AND dsPIC33FJ16MC101/102
21.1
The RTCC module registers are organized into three
categories:
• RTCC Control Registers
• RTCC Value Registers
• Alarm Value Registers
21.1.1
To limit the register interface, the RTCC Timer and
Alarm
corresponding register pointers. The RTCC Value
register window (RTCVALH and RTCVALL) uses the
RTCPTR bits (RCFGCAL<9:8>) to select the desired
timer register pair (see
By writing the RTCVALH byte, the RTCC Pointer value,
RTCPTR<1:0> bits, decrement by one until they reach
‘00’. Once they reach ‘00’, the MINUTES and
SECONDS value will be accessible through RTCVALH
and RTCVALL until the pointer value is manually
changed.
TABLE 21-1:
The Alarm Value register window (ALRMVALH and
ALRMVALL)
(ALCFGRPT<9:8>) to select the desired Alarm register
pair (see
EXAMPLE 21-1:
DS70652C-page 214
RTCPTR
<1:0>
MOV
MOV
MOV
MOV
MOV
BSET
00
01
10
11
Time
RTCC Module Registers
Table
REGISTER MAPPING
21-2).
#NVMKEY, W1
#0x55, W2
#0xAA, W3
W2, [W1]
W3, [W1]
RCFGCAL, #13
registers
uses
RTCVAL<15:8>
RTCVAL REGISTER MAPPING
RTCC Value Register Window
WEEKDAY
MINUTES
MONTH
SETTING THE RTCWREN BIT
Table
—
the
are
21-1).
accessed
ALRMPTR
RTCVAL<7:0>
;move the address of NVMKEY into W1
;start 55/AA sequence
;set the RTCWREN bit
SECONDS
HOURS
YEAR
DAY
through
Preliminary
bits
By writing the ALRMVALH byte, the Alarm Pointer
value, ALRMPTR<1:0> bits, decrement by one until
they reach ‘00’. Once they reach ‘00’, the ALRMMIN
and ALRMSEC value will be accessible through
ALRMVALH and ALRMVALL until the pointer value is
manually changed.
TABLE 21-2:
Considering that the 16-bit core does not distinguish
between 8-bit and 16-bit read operations, the user must
be aware that when reading either the ALRMVALH or
ALRMVALL bytes will decrement the ALRMPTR<1:0>
value. The same applies to the RTCVALH or RTCVALL
bytes with the RTCPTR<1:0> being decremented.
21.1.2
In order to perform a write to any of the RTCC Timer
registers, the RTCWREN bit (RCFGCAL<13>) must be
set (refer to
ALRMPTR
Note:
Note:
<1:0>
00
01
10
11
This only applies to read operations and
not write operations.
WRITE LOCK
To avoid accidental writes to the timer, it is
recommended that the RTCWREN bit
(RCFGCAL<13>) is kept clear at any
other time. For the RTCWREN bit to be
set, there is only 1 instruction cycle time
window allowed between the 55h/AA
sequence and the setting of RTCWREN;
therefore, it is recommended that code
follow the procedure in
Example
ALRMVAL<15:8> ALRMVAL<7:0>
ALRMVAL REGISTER
MAPPING
Alarm Value Register Window
ALRMMNTH
ALRMMIN
ALRMWD
21-1).
© 2011 Microchip Technology Inc.
—
Example
ALRMSEC
ALRMDAY
ALRMHR
—
21-1.
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