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| 型号： | S-7760A40XX-TCT1U |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO16 |
| 封装： | HALOGEN FREE AND LEAD FREE, TSSOP-16 |
| 文件页数： | 7/54页 |
| 文件大小： | 673K |
| 代理商： | S-7760A40XX-TCT1U |
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E
2PROM CIRCUIT)
Rev.2.0_00
S-7760A
Seiko Instruments Inc.
15
6.
DO0 to 3 Timer setting registers
These registers are 8-bit registers which correspond to each port, with these registers, users can set delay time for the
change of output at output ports (DO0 to 3). When delay time is set, its value is a multiple of timer scale. The multiple
is integers 1 to 8. By setting the corresponding bits seen in Figure 17 in “1”, a multiple is selected to determine delay
time. For each port, set only 1-bit in the bit that you set “1”. And if setting all 8 bits in “0”, output is not inverted even if
the condition to start a timer matches.
B7
LSB
8×T
7×T
6×T
5×T
4×T
MSB
B6
B5
B4
B3
B2
B1
B0
3×T
2×T
1×T
R / W
DO0
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO1
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO2
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO3
Figure 17
Timer Setting Register DO0 to 3
Figure 17
shows the short-time timer scale setting. In case of a long-time setting, T is LT.
The following options are available for timer setting.
·Using an internal oscillation circuit/Switching the external clock input
·Option setting for delay time (4 types)
(1) When using an internal clock (Typ.)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (5
μs, 320 μs)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (10
μs, 640 μs)
(2) When using an external clock (Period of input clock = T’)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (T’, 64
× T’)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (2
× T’, 128 × T’)
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S-7760A41XX-HCT1 | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
| S-7760A41XX-TCT1G | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
| S-7760A42XX-HCT1 | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
| S-7760A42XX-TCT1G | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
| S-7760A43XX-HCT1 | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
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