S-7760A Datasheet, PDF (16/53 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.1.3_00
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
16
Seiko Instruments Inc.