Ac Characteristics (5 V, Cpu Operates At The External Clock Frequency) - Hitachi H8/3152 Hardware Manual

12.2.4

AC Characteristics (5 V, CPU operates at the external clock frequency)

Conditions: V = 4.5 to 5.5 V, V
CC
Item
Clock cycle time
Clock high width
Clock low width
Clock fall time
Clock rise time
I/O port input fall time
I/O port input rise time
RES pulse width
Power-on time
Power-off time
EEPROM write time
Clock hold time
Clock setup time
Interrupt pulse width (IRQ)
Note: * It is assumed that there is no noise on the CLK pin, and the rise and fall of CLK are
straightforward.
CLK
0.5 V
t
Cr
Figure 12.1 CLK Input Waveform (V
112
= 0 V, T
SS
Symbol
t
cyc
t
CH
t
CL
t
Cf
t
Cr
t
f
t
r
t
RWL
t
on
t
off
t
EPW
t
CLKH
t
CLKS
t
IRQW
t
cyc
× 0.7
V V
CC CC
t
CH
t
Cf
= –25 to +85°C, unless otherwise specified.
a
Min Typ Max
0.2 — 1.0
0.4 — 0.6
0.4 — 0.6
— — 0.09*
— — 0.09*
— — 1.0
— — 1.0
20 — —
0 — —
0 — —
— — 10
— — 5
20 — —
20 — —
200 — —
× 0.7
0.5 V 0.5 V
t
CL
CC
Unit Test Conditions
µs
Figure 12.1
t Figure 12.1
cyc
t Figure 12.1
cyc
t Figure 12.1
cyc
t Figure 12.1
cyc
µs
Figure 12.2
µs
Figure 12.2
t Figure 12.3
cyc
ms Figure 12.3
ms Figure 12.3
ms Rewrite
ms Erase, overwrite
t Figure 12.4
cyc
t Figure 12.4
cyc
ns Figure 12.4
= 4.5 V to 5.5 V)