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table 3.14.4 Performance listing for each segment and common number
com
XT number of counts for
tLP making: D
T
198.4
LP
T
STOP
32seg
CPU stop rate
T
STOP
64seg
CPU stop rate
T
STOP
80seg
CPU stop rate
T
STOP
120seg
CPU stop rate
T
STOP
128seg
CPU stop rate
T
STOP
160seg
CPU stop rate
T
STOP
240seg
CPU stop rate
T
STOP
320seg
CPU stop rate
T
STOP
360seg
CPU stop rate
(note1): The above time distance are value which used f
(note2): CPU stop time tSTOP : A value is value when reading a transmitting memory by 0WAIT in the
BYTE mode. The value becomes x1.5 in NIBLE mode and X4.5 in BIT mode.The time required to
the transmission start accompanied by bus opening demand is not included in the above-mentioned
numerical value.
(note3 ):The following equation can calculate tLP listed below.
tLP = D / 32768 [sec]
（ex）If the row is 240 and D = 1.5 by the above table
D3BFR pin
DLEBCD pin
1
D2BLP pin
D1BSCP pin
D7-D0 pin
T1
t
STOP
BUS
time of CPU
64
68
80
100
com
com
com
6.5
6
5
4
183.1
152.6
122.1
0.5
0.5
0.7
0.8
1.0
1.0
1.3
1.6
1.3
1.3
1.6
2.0
1.9
1.9
2.5
3.1
2.0
2.0
2.6
3.3
2.5
2.5
3.3
4.1
3.8
3.8
4.9
6.1
5.0
5.0
6.6
8.2
5.7
5.7
7.4
9.2
tLP = 1.5 / 32768 = 45.8 [us]
tLP
2
3
occupation
※BUS occupation rate of CPU = tSTOP / T1
figure 3.14.4 Stop time and BUS occupation rate of CPU
91C815-
120
128
144
com
com
com
3.5
3
2.5
106.8
91.6
76.3
1.0
0.9
0.9
1.1
2.0
1.9
1.9
2.2
2.5
2.3
2.3
2.7
3.75
3.5
3.5
4.1
4.0
3.7
3.7
4.4
5.0
4.7
4.7
5.5
7.5
7.0
7.0
8.2
10.0
9.4
9.4
10.9
11.25
10.5
10.5
12.3
=16[MHz],f
=32.768[KHz].
FPH
s
1
2
3
120
221
TMP91C815
160
200
240
unit
com
com
com
---
2.5
2
1.5
76.3
61.0
45.8
us
us
1.3
1.6
1.6
%
us
2.6
3.3
3.3
%
us
3.3
4.1
4.1
%
us
4.9
6.1
6.1
%
us
5.2
6.6
6.6
%
us
6.6
8.2
8.2
%
us
9.8
12.3
12.3
%
us
13.1
16.4
16.4
%
us
14.7
18.4
18.4
%
2
120
1
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