S-7750C Datasheet, PDF (15/44 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
Example 1. When using an internal clock
Example 1-1 In case of; Timer scale register “1” (short-time setting), Delay time option “A” (×1 setting); (T = 5 µs)
Example 1-2 In case of; Timer scale register “0” (long-time setting), Delay time option “A” (×1 setting); (LT = 320 µs)
MSB
B7
B6
B5
B4
B3
B2
B1
B0
LSB
Example 1-1
40 µs
35 µs
30 µs
25 µs
20 µs
15 µs
10 µs
5 µs
Example 1-2 _{2.56 ms 2.24 ms 1.92 ms 1.60 ms 1.28 ms 0.96 ms 0.64 ms 0.32 ms}
Example 2. When using an external clock (100 KHz, T’ = 10 µs)
Example 2-1 In case of; Timer scale register “1” (short-time setting), Delay time option “B” (×2 setting); (T = 2×T’ = 20 µs)
Example 2-2 In case of; Timer scale register “0” (long-time setting), Delay time option “B” (×2 setting); (LT = 128×T’ = 1280 µs)
MSB
B7
B6
B5
B4
B3
B2
B1
B0
LSB
Example 2-1
160 µs
140 µs
120 µs
100 µs
80 µs
60 µs
40 µs
20 µs
Example 2-2 _{10.24 ms 8.96 ms 7.68 ms 6.40 ms 5.12 ms 3.84 ms 2.56 ms 1.28 ms}
Figure 17 Example of Using Timer Setting for DO7 to DO0 Register
Seiko Instruments Inc.
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