DP8570 NSC [National Semiconductor], DP8570 Datasheet - Page 20

• Manufacturer Part Number: DP8570
• Description: Timer Clock Peripheral (TCP)
• Manufacturer: NSC [National Semiconductor]

Main Status Register PS
Timer 0 Control Register PS
Timer 1 Control Register PS
Periodic Flag Register PS
Interrupt Routing Register PS
Real Time Mode Register PS
Output Mode Register PS
Interrupt Control Register 0 PS
Interrupt Control Register 1 PS
Count Hold
Count Hold
Control and Status Register Address Bit Map
Time Save
Power Fail
Freq XT1
Interrupt
Interrupt
MFO as
Timer 1
Enable
Crystal
Crystal
Enable
Enable
Select
Mode
Page
R W
Gate
Gate
R W
R W
Test
D7
Single Supply
Low Battery
Osc Fail
Freq XT0
Register
Interrupt
Interrupt
MFO as
Timer 0
Timer 0
Crystal
Enable
Enable
Select
Timer
Timer
R W
Alarm
Read
Read
R W
Flag
D6
R
6
4
e
e
e
0 RS
e
e
on Back-Up
0
Input Clock
Input Clock
0
Power Fail
e
Timers EN
Select C2
Select C2
Interrupt
Interrupt
Interrupt
e
Timer 1
Enable
PP OD
Enable
Enable
R W
0 RS
0
Delay
DOW
R W
0
MFO
e
e
1 ms
1 ms
Flag
D5
R
0
e
0
0
5
1
RS
RS
0 ADDRESS
e
RS
RS
e
e
RS
0 Address
Active HI LO
Interrupt EN
RS
RS
on Back-Up
Input Clock
e
Input Clock
1
0
e
Select C1
Select C1
Int Route
MFO INT
Interrupt
Interrupt
Interrupt
Timer 0
Timer 1
e
Enable
Enable
10 ms
10 ms
Month
R W
0
MFO
R W
Flag
1
e
e
D4
R
0
5
1
1
1
Address
Address
e
e
Address
Address
00H
Address
01H
Input Clock
Input Clock
Address
Address
Start Stop
Select C0
Select C0
Int Route
MFO INT
Interrupt
Interrupt
Interrupt
100 ms
Timer 0
PP OD
100 ms
Enable
Enable
R W
Alarm
Clock
e
e
INTR
DOM
R W
Flag
D3
R
e
20
03H
02H
5
e
1
e
02H
01H
e
e
04H
03H
04H
Active HI LO
Select M1
Select M1
Int Route
MFO INT
12 24 Hr
Seconds
Seconds
Interrupt
Interrupt
Interrupt
Periodic
Enable
Enable
R W
Hours
Mode
Mode
Alarm
Mode
INTR
R W
Flag
D2
R
5
1
10 Second
10 Second
Power Fail
Leap Year
Select M0
Select M0
Int Route
MFO INT
Interrupt
Interrupt
Interrupt
Periodic
PP OD
Enable
Minute
Enable
Mode
Mode
R W
MSB
Flag
D1
R
R
T1
2
5
Active HI LO
Start Stop
Start Stop
Power Fail
Leap Year
Int Route
MFO INT
Interrupt
Interrupt
Interrupt
Second
Enable
Enable
Minute
Minute
Status
Timer
Timer
R W
Flag
LSB
D0
R
R
T1
3
5
1 Reset by
2 Set reset by
3 Reset when
All Bits R W
All Bits R W
4 Read Osc fail
5 Reset by
6 Set and reset
All Bits R W
All Bits R W
All Bits R W
All Bits R W
writing
1 to bit
voltage at
PFAIL pin
all pending
interrupts
are removed
Write 0 Batt-
Backed Mode
Write 1 Single
Supply Mode
positive edge
of read
by V
voltage
BB