S7760A Datasheet, PDF (16/54 Pages) Seiko Instruments Inc – PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E²PROM CIRCUIT)
S-7760A
Rev.2.0_01
In case that users select “delay time option A” and to use an internal oscillation circuit, and if setting “1” in B6 bit in the
D03 timer setting register, “1” in TS3 in the timer scale register, DO3 inverts at delay time of 35 μs (7 × 5 μs). Other
examples are shown in Figure 18.
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}
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}
Example 1. When using an internal CLK
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)
Example 2. When using an external CLK (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)
Figure 18 Example of Using Timer Setting Register 0 to 3
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