UPD784044 Datasheet, PDF (73/90 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784044(A), 784046(A)
(3) Electrical specifications of µPD784044(A2), 784046(A2) (5/6)
Serial Operation (TA = –40 to +125 ˚C, VDD = 4.5 to 5.5 V, VSS = 0 V)
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
Serial clock cycle time
tCYSK
SCK1, SCK2 output BRG
TSFT
ns
SCK1, SCK2 input External clock
800
ns
Serial clock low-level width
tWSKL
SCK1, SCK2 output BRG
0.5TSFT–40
ns
SCK1, SCK2 input External clock
360
ns
Serial clock high-level width
tWSKH
SCK1, SCK2 output BRG
0.5TSFT–40
ns
SCK1, SCK2 input External clock
360
ns
SI1, SI2 setup time
(vs. SCK1, SCK2↑)
tSSSK
80
ns
SI1, SI2 hold time
(vs. SCK1, SCK2↑)
tHSSK
80
ns
SCK1, SCK2↓→SO1, SO2
output delay time
tDSBSK
R = 1 kΩ, C = 100 pF
0
150
ns
Remarks 1. TSFT is a value set in software. The minimum value is tCYK × 8.
2. tCYK = 1/fCLK (fCLK is internal system clock frequency)
Other Operations (TA = –40 to +125 ˚C, VDD = 4.5 to 5.5 V, VSS = 0 V)
Parameter
Symbol
NMI high, low-level width
tWNIH, tWNIL
INTP0-INTP6 high, low-level width tWITH, tWITL
TI2, TI3 high, low-level width tWTIH, tWTIL
RESET high, low-level width
tWRSH, tWRSL
Conditions
MIN.
10
4
4
10
MAX.
Unit
µs
tCYSMP
tCYSMP
µs
Remarks 1. tCYSMP is a sampling clock set in the noise protection control register (NPC) in software.
When NIn = 0, tCYSMP = tCYK
When NIn = 1, tCYSMP = tCYK × 4
2. tCYK = 1/fCLK (fCLK is internal system clock frequency)
3. NIn: Bit n of NPC (n = 0-6)
AC Timing Test Point
VDD
0.8 VDD or 2.2 V
Test point
0.8 VDD or 2.2 V
0.8 V
0V
0.8 V
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