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PDF PCF85363ATT1 Data sheet ( Hoja de datos )
| Número de pieza | PCF85363ATT1 | |
| Descripción | Tiny Real-Time Clock/calendar | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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PCF85363A
Tiny Real-Time Clock/calendar with 64 byte RAM, alarm
function, battery switch-over time stamp input, and I2C-bus
Rev. 1 — 10 July 2014
Product data sheet
1. General description
The PCF85363A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low
power consumption and with automatic switching to battery on main power loss. The RTC
can also be configured as a stop-watch (elapsed time counter). Three time log registers
triggered from battery switch-over as well as input driven events. Featuring clock output
and two independent interrupt signals, two alarms, I2C interface and quartz crystal
calibration, 64 byte battery backed-up RAM.
For a selection of NXP Real-Time Clocks, see Table 72 on page 86
2. Features and benefits
Provides year, month, day, weekday, hours, minutes, seconds and 100th seconds
based on a 32.768 kHz quartz crystal
Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours
Two independent alarms
Battery back-up circuit
WatchDog timer
Three timestamp registers
Two independent interrupt generators plus predefined interrupts at every second,
minute, or hour
64 byte battery backed-up RAM
Frequency adjustment via programmable offset register
Clock operating voltage: 0.9 V to 5.5 V
Low current; typical 0.28 A at VDD = 3.0 V and Tamb = 25 C
400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz,
8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, and
CL = 12.5 pF
3. Applications
Elapsed time counter
Printers and copiers
Network powered devices
Battery backed up systems
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 23.
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7.2 Pin description
Table 4. Pin description
Input or input/output pins must always be at a defined level (VSS or VDD) unless otherwise specified.
Symbol
Type Description
PCF85363ATL
(DFN2626-10)
PCF85363ATT
(TSSOP8)
PCF85363ATT1
(TSSOP10)
Primary use
Secondary use
OSCI
1
1
1
input oscillator input
-
OSCO
2
2
2
output oscillator output
-
VBAT
3
3
3
supply battery backup supply
-
voltage[1]
TS (CLK/INTB)
4
-
4
input/ can be configured with TSPM[1:0][2]
output
timestamp input
INTB and CLK output
(push-pull); stop-watch
control
VSS
5
4
5
supply ground supply voltage
-
SDA
6
5
6
input/ serial data line
-
output
SCL 7
6
7
input serial clock input
-
CLK 8
-
8
output CLK (push-pull)
-
INTA (CLK)
9
7
9
output can be configured with INTAPM[1:0][3]
interrupt output
(open-drain)
CLK output (open-drain)
VDD
10
8
10
supply supply voltage
-
[1] Connect to VDD if not used.
[2] See Table 7 and Table 47.
[3] See Table 7 and Table 49.
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Table 6. Stop-watch mode time registers …continued
Bit positions labeled as - are not implemented. After reset, all registers are set according to Table 62 on page 58. …continued
Address Register name
Bit
Reference
76543210
Stop-watch timestamp1 (TSR1)
11h
TSR1_seconds
-
TSR1_SECONDS (0 to 59)
Section 8.7
12h TSR1_minutes -
TSR1_MINUTES (0 to 59)
13h TSR1_hr_xx_xx_00 TSR1_HR_XX_XX_00 (0 to 99)
14h TSR1_hr_xx_00_xx TSR1_HR_XX_00_XX (0 to 99)
15h TSR1_hr_00_xx_xx TSR1_HR_00_XX_XX (0 to 99)
16h not used
--------
Stop-watch timestamp2 (TSR2)
17h
TSR2_seconds
-
TSR2_SECONDS (0 to 59)
Section 8.7
18h TSR2_minutes -
TSR2_MINUTES (0 to 59)
19h TSR2_hr_xx_xx_00 TSR2_HR_XX_XX_00 (0 to 99)
1Ah TSR2_hr_xx_00_xx TSR2_HR_XX_00_XX (0 to 99)
1Bh TSR2_hr_00_xx_xx TSR2_HR_00_XX_XX (0 to 99)
1Ch not used
--------
Stop-watch timestamp3 (TSR3)
1Dh
TSR3_seconds
-
TSR3_SECONDS (0 to 59)
Section 8.7
1Eh TSR3_minutes -
TSR3_MINUTES (0 to 59)
1Fh TSR3_hr_xx_xx_00 TSR3_HR_XX_XX_00 (0 to 99)
20h TSR3_hr_xx_00_xx TSR3_HR_XX_00_XX (0 to 99)
21h TSR3_hr_00_xx_xx TSR3_HR_00_XX_XX (0 to 99)
22h not used
--------
Stop-watch timestamp mode control
23h TSR_mode
TSR3M[1:0]
- TSR2M[2:0]
TSR1M[1:0]
Section 8.7
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