Ac Characteristics (3 V, Cpu Operates At Half Of The External Clock Frequency) - Hitachi H8/3152 Hardware Manual

12.2.6

AC Characteristics (3 V, CPU operates at half of the external clock frequency)

Conditions: V = 2.7 to 3.3 V, V
CC
Item
Clock cycle time H8/3153
Except
H8/3153
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.
= 0 V, T = –25 to +85°C, unless otherwise specified.
SS a
Symbol Min
t 0.25
cyc
t 0.2
cyc
t 0.4
CH
t 0.4
CL
t —
Cf
t —
Cr
t —
f
t —
r
t 20
RWL
t 0
on
t 0
off
t —
EPW
—
t 20
CLKH
t 20
CLKS
t 400
IRQW
Typ Max
— 1.0
— 1.0
— 0.6
— 0.6
— 0.09 *
— 0.09 *
— 1.0
— 1.0
— —
— —
— —
— 10
— 5
— —
— —
— —
Unit Test Conditions
µs
Figure 12.5
t Figure 12.5
cyc
µs
Figure 12.6
t Figure 12.7
cyc
ms Figure 12.7
ms Figure 12.7
ms Rewrite
ms Erase, overwrite
t Figure 12.8
cyc
t Figure 12.8
cyc
ns Figure 12.8
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