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S-7760A00XX-HCT1 Datasheet(PDF) 18 Page - Seiko Instruments Inc

Part # S-7760A00XX-HCT1
Description  PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-7760A00XX-HCT1 Datasheet(HTML) 18 Page - Seiko Instruments Inc

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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7760A
Rev.1.3_00
Seiko Instruments Inc.
18
Timing of Data Loading from E2PROM and Timer Action
The example of timing chart of data loading from the E
2PROM and timer action is shown in Figure 19 and 20.
Set VCCH
≥ 2.5 V when rising VCCH and TIMEN simultaneously.
Signal of low power
supply voltage
detection
2.05 V Typ.
Oscillation circuit
EN
DO3 pin
(When E
2PROM
CTR3 = 0)
TIMEN pin
Start of timer action by Write in
timer enable register
Start of timer action by setting
TIMEN pin “L”
→ “H”
Start of timer action due to power-on
CTR3 register
(When E
2PROM
CTR3 = 0)
*1. A period to define data is; the loading period from E
2PROM + the period to stabilize output from DO7 to 0 pin = within
100
µs.
DO2 pin
(When E
2PROM
CTR2 = 1)
CTR2 register
(When E
2PROM
CTR2 = 1)
Reload starts
Reload starts
Data loading
Period to define data
*1
Delay time by timer setting with DO3
Time out
Time out
Time out
Power supply voltage
VCCH / VCCL
Delay time by timer setting with DO2
Delay time by timer setting with DO3
Delay time by timer setting with DO3
Delay time by timer setting with DO2
Delay time by timer setting with DO2
Figure 19 Data Loading and Timer Action Example 1


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