UPD75P048 Datasheet, PDF (23/40 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

µPD75P048
AC CHARACTERISTICS (Ta = -10 to +70°C, VDD = 2.7 to 6.0 V)
Parameter
CPU Clock Cycle Time
(Minimum Instruction
Execution Time
= 1 Machine Cycle) ^{Note 1}
Symbol
tCY
Conditions
w/main system clock VDD = 4.5 to 6.0V
w/subsystem clock
TI0 Input Frequency
fTI
VDD = 4.5 to 6.0 V
TI0 Input High-, Low-
Level Widths
Interrupt Input High-,
Low-Level Widths
tTIH,
tTIL
tINTH,
tINTL
RESET Low-Level Width tRSL
VDD = 4.5 to 6.0 V
INT0
INT1, 2, 4
KR0-7
MIN.
0.95
3.8
114
TYP.
MAX.
32
32
122 125
Unit
µs
µs
µs
0
0
0.48
1.8
Note 2
10
10
10
1
MHz
275 kHz
µs
µs
µs
µs
µs
µs
Note 1. The CPU clock (Φ) cycle time is de-
termined by the oscillation frequency
of the connected oscillator, system
clock control register (SCC), and
32
processor clock control register (PCC).
The figure on the right is cycle time tCY
vs. supply voltage VDD characteristics ⁶
at the main system clock.
5
2. 2tCY or 128/fX depending on the set- 4
ting of the interrupt mode register
(IM0).
3
2
tCY vs VDD
(with main system clock)
Operation
quaranteed
range
1
0.5
0
1
2
3
4
5
6
Supply voltage VDD [V]
23