S-7750C Datasheet, PDF (31/44 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
Rev.1.1_00
S-7750C
„ Option
Three options which are available for the S-7750C and the option tables are shown here. When selecting the option,
follow these descriptions.
1. Device code (8 types)
Selecting the arbitrary device address code is available (Refer to Figure 10).
Table 12
No.
(0)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Option List of Device Code
C2
C1
C0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
2. Internal generation of oscillation clock / External input
The S-7750C incorporates an oscillator for generating delay time. Instead of using the oscillator, an external
oscillation clock can be used for the delay time.
Table 13
No.
(1)
(2)
Option List of Oscillation Clock
Internal / External
Using an internal oscillation circuit
Using an external oscillation circuit
3. Delay time
The delay time can be selected between A: ×1 and B: ×2. (T’: Oscillation clock cycle (5 µs when using the internal
oscillation circuit)).
Table 14 Option List of Delay Time
No.
Delay
Timer scale setting register
1: Delay time for short-time setting (T) 0: Delay time for long-time setting (LT)
A
×1
T’×1
T’×64
B
×2
T’×2
T’×128
Seiko Instruments Inc.
31