UPD784031 Datasheet, PDF (66/90 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLER

µPD784031
SERIAL OPERATION (TA = -40 to +85 °C, VDD = +2.7 to 5.5 V, AVSS = VSS = 0 V)
(1) CSI
Parameter
Symbol
Conditions
Serial clock cycle time (SCK0) tCYSK0
Input External clock
When SCK0 and SO0 are CMOS I/O
Output
Serial clock low-level width
(SCK0)
tWSKL0
Input External clock
When SCK0 and SO0 are CMOS I/O
Output
Serial clock high-level width
(SCK0)
tWSKH0
Input External clock
When SCK0 and SO0 are CMOS I/O
Output
SI0 setup time (to SCK0↑)
tSSSK0
SI0 hold time (to SCK0↑)
tHSSK0
SO0 output delay time
(to SCK0↓)
tDSBSK1
CMOS push-pull output
(3-wire serial I/O mode)
tDSBSK2
Open-drain output
(2-wire serial I/O mode), RL = 1 kΩ
MIN.
10/fXX + 380
T
5/fXX + 150
0.5T - 40
5/fXX + 150
0.5T - 40
40
5/fXX + 40
0
0
Remarks 1. The values in this table are those when CL is 100 pF.
2. T : Serial clock cycle set by software. The minimum value is 16/fXX.
3. fXX : Oscillator frequency
MAX.
Unit
ns
µs
ns
µs
ns
µs
ns
ns
5/fXX + 150
ns
5/fXX + 400
ns
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