NJU6535FH1 NJR, NJU6535FH1 Datasheet - Page 13

• Manufacturer Part Number: NJU6535FH1
• Description: LCD Drivers 1/3 1/4 LCD
• Manufacturer: NJR

Specifications of NJU6535FH1

• Operating Supply Voltage: 5.5 V
• Maximum Operating Temperature: + 70 C
• Package / Case: PQFP-H1
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(6-4)
Ver.2004-04-16
whether Key On or Off. When the result of comparison is correct (accord), the NJU6535 recognizes Key On and outputs “L”
level from SO terminal after 577T[S] from start of Key scan for a request to read key data out to external CPU. When the
SO terminals outputs “L” signal, the key scan does not operate until end of key data reading by CPU, and
scanned key data is kept. When the result of comparison is incorrect (not accord), Key scan operates again if any key is
On. Therefore, Key scan may operate incorrectly in case of shorter period of Key on than 577T[S]
Key scan cycle is 288T[S]. The data of key scan is a result of comparison with a couple of Key scan for correct judge
*1
SO
S0
S1
S2
S3
S4
S5
Timing of Key scan
Instruction data K0, K1 set the output ports to output the scan signals (refer (1)Instruction (2-4)Segment output / Key
Key scan cycle and the timing of Key data read out request are constant in any combination of S0, S1, K0 and K1.
scan selection)
*1
*1
*1
*1
*1 1
Key ON
2
288T[s]
3
4
5
6
577T [s]
1
2
3
4
5
6
*1
*1
*1
*1
*1
T = 1 / fosc
NJU6535
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