Something about the CMOS-clock
(C) AlCo
Hello, All!
Here, at the insistence of Cyril Frolov had to make the
scheme a signal M1, the benefit, remained the failure to
involve an element of Lesco. And thanks to his own post that
Dallas is not too steep, is "Option 2".
Now it is possible for the programmer a little more freely
refer to on / off access to the clock, which can lead to the
emergence of glitches in those who did not finalize a watch
from you! However, leave it on the conscience of the
programmers.
CMOS-clock.
Standard Ports "GLUK".
# EFF7 bit 7 - the inclusion of access to the clock
# DFF7 - a record in the CMOS cell address
# BFF7 - read (write) data from (a) CMOS
Option 1.
10 22M KR512VI1
quartz at 32.768 kHz
20 February OS1 RTC
3 OS2
470K
1533LE1
M1 February 1
1533ID7 March 1
1 A12 A0 DC 15
A13 2 A1 14
A14 3 A2 13 Jan. 11
12 December 13, 1917 DS
11
A3 4 v1 August 10 January 10, 1914 AS
/ OIRQ 5 v2 September 9
A15 V3 6 July 1915 R / W
5 1 April 1913 cE
/ WR 6
4 AD0
5 AD1
6 AD2
/ 7 AD3
9 C TT 1533TM8 D0-D7-8 AD4
RESET 1 R 9 AD5
10 AD6
D0 Q0 D1 4 2> 11 AD7
/ Q0 3>
D7 5 D1 Q1 July 18 rES
/ Q1 June 1K bps to 20 CKF
12 D2 Q2 1910 1K 22 PS / IRQ 19
/ Q2 11 E
13 D3 Q3 15430 KT315 SQW 1923
/ Q3 1914 10K CKOUT 21
+5 V> Vdd Vss 24 12
KD522
+3 V Battery>
D311 (D9) - using
batteries with a voltage less than 4V, this diode must
should be a germanium! At higher voltages
You can put KD522.
The signals from the legs 2 and 3 can be fed TM8
the scheme ext. graph. mode 512 * 192. Then
from the scheme can only KP11 and IR23.
Actually shemka connection legs 18, 20,
22 bit is incorrect, but it works well. So it was with Gluck,
and currently I have done so - was too lazy to do it right.
(True, from Gluck's clock feed only on battery
4.5V)
And in the good should be used as follows:
KD522 D311
+5 V> <+3 V battery
10K 20K
a diode 24 Vdd
KD522 <22 PS
4700 4700 1920 CKF
18 rES
And if you plan in future to modify your favorite computer,
so that it includes the signal clock CMOS (all software support
is already in the firmware MADROM by AXLR), do not be lazy just
do as necessary.
Option 2.
Those who could not get such as rulez
KR512VI1 and dig out of the HRC "Dallas" or
some other foreign analogues have
stay on it. Although VI1 in
such inclusion would be easy to work with;)
10 22M KR512VI1
quartz at 32.768 kHz
20 February OS1 RTC
3 OS2
470K
1533ID7 1533LL1
/ RD 1 January
February 3 1917 DS
1 A12 A0 DC 15
A13 2 A1 14 4 1
A14 3 A2 13 May 6, 1915 R / W
12
11 1533LE1
A3 4 v1 10 February 1 January 1914 AS
/ OIRQ 5 v2 September 3
A15 V3 6 July 1913 cE
5 1 4
/ WR 6 April AD0
5 AD1
6 AD2
/ 7 AD3
9 C TT 1533TM8 D0-D7-8 AD4
RESET 1 R 9 AD5
10 AD6
D0 Q0 D1 4 2> 11 AD7
/ Q0 3>
D7 5 D1 Q1 July 18 rES
/ Q1 June 1K bps to 20 CKF
12 D2 Q2 1910 1K 22 PS / IRQ 19
/ Q2 11 E
13 D3 Q3 15430 KT315 SQW 1923
/ Q3 1914 10K CKOUT 21
+5 V> Vdd Vss 24 12
KD522
+3 V Battery>
D311
