PCF8573P NXP Semiconductors, PCF8573P Datasheet - Page 11

• Manufacturer Part Number: PCF8573P
• Manufacturer: NXP Semiconductors

Specifications of PCF8573P

• Time Format: HH:MM:SS
• Package Type: PDIP
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 16
• Mounting: Through Hole
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
Table 3 MODE-POINTER-word, CONTROL-nibble (bits 8, 7, 6 and 5)
Note
1. If the seconds counter is below 30 there is no carry. This causes a time adjustment of max. 30 s. From the count
Table 4 MODE-POINTER-word, ADDRESS-nibble (bits 4, 3, 2 and 1)
At the end of each data word the address bits B1, B0 will be incremented automatically provided the preceding
CONTROL-nibble is set to EXECUTE ADDRESS. There is no carry to B2.
Table 5 shows the placement of the BCD upper and lower digits in the DATA byte for writing into the addressed part of
the time counter and alarm register respectively.
Table 6 shows the acknowledgement response of the clock calendar as a slave receiver.
Table 5 Placement of BCD digits in the DATA byte; note 1
Note
1. ‘X’ is the don’t care bit; ‘D’ is the data bit.
2003 Jan 27
BIT 8
BIT 4
Clock/calendar with serial I/O
MSB
UD
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
30 there is a carry which adjusts the time by max. 30 s.
X
X
X
X
C2
B2
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
UPPER DIGIT
UC
D
X
X
X
C1
B1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
1
UB
D
D
D
X
C0
B0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
UA
D
D
D
D
execute address
read control/status flags
reset prescaler, including seconds counter; without carry for minute counter
time adjust, with carry for minute counter (note 1)
reset NODA flag
set NODA flag
reset COMP flag
time counter hours
time counter minutes
time counter days
time counter months
alarm register hours
alarm register minutes
alarm register days
alarm register months
DATA
LD
D
D
D
D
LOWER DIGIT
LC
D
D
D
D
11
LB
D
D
D
D
ADDRESSED TO:
FUNCTION
LSB
LA
D
D
D
D
hours
minutes
days
months
ADDRESSED TO:
Product specification
PCF8573