Overview Of Calendar Macros - Fujitsu MB91150 Series Hardware Manual

CHAPTER 20 CALENDAR MACROS

20.1 Overview of Calendar Macros

The calendar macros use a basic clock frequency of 32.768 kHz.
These macros have clock functions for years, months, days, hours, minutes, seconds,
days of the week, and leap years.
For the year, the lower 2 digits of the year, 0 to 99, are counted.
I Block diagram of calendar macros
Figure 20.1-1 "Block diagram of calendar macros" is a block diagram that applies to each
calendar macro.
I Registers of calendar macros
Figure 20.1-2 "Calendar macro registers" lists the calendar macro registers.
Address 000210
Address 000211
Address 000212
Address 000213
Address 000214
Address 000215
Address 000216
Address 000217
Address 00021F
406
Figure 20.1-1 Block diagram of calendar macros
Oscillator
Calendar circuit
32KHz
Figure 20.1-2 Calendar macro registers
D7 - -
H
- - D5
H
- - D5
H
- - -
H
- - -
H
- - -
H
- - -
H
- D6 D5
H
D7 -
H
Bus
control
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
D4 D3 D2 D1
- - D2 D1
- D3 D2 D1
D4 D3 D2 D1
- - - -
D0 CAC register
D0 CA1 register
D0 CA2 register
D0 CA3 register
D0 CA4 register
D0 CA5 register
D0 CA6 register
D0 CA7 register
D0 CAS register