Hitachi SH7032 - Page 17

Section Page Description Edition
20.2.3 AC
Characteristics
(1) Clock Timing
Table 20.18 Clock
Timing
522 12.5 MHz added and description amended
12.5 MHz 20 MHz
Item Symbol Min Max Min Max Unit Figures
EXTAL input high level
pulse width
t
EXH
22 — 15 — ns 20.45
EXTAL input low level
pulse width
t
EXL
22 — 15 — ns
EXTAL input rise time t
EXr
—10 —5 ns
EXTAL input fall time t
EXf
—10 —5 ns
Clock cycle time t
cyc
80 500 50 250 ns 20.45, 20.46
Clock high pulse width t
CH
30 — 20 — ns 20.46
Clock low pulse width t
CL
30 — 20 — ns
Clock rise time t
Cr
—10 —5 ns
Clock fall time t
Cf
—10 —5 ns
Reset oscillation settling
time
t
OSC1
10 — 10 — ms 20.47
Software standby
oscillation settling time
t
OSC2
10 — 10 — ms
6
(2) Control Signal
Timing
Table 20.19 Control
Signal Timing
524 12.5 MHz added and description amended
12.5 MHz 20 MHz
Item Symbol Min Max Min Max Unit Figure
RES setup time t
RESS
320 — 200 — ns 20.48
RES pulse width t
RESW
20 — 20 — t
cyc
NMI reset setup time t
NMIRS
320 — 200 — ns
NMI reset hold time t
NMIRH
320 — 200 — ns
NMI setup time t
NMIS
160 — 100 — ns 20.49
NMI hold time t
NMIH
80 — 50 — ns
IRQ0–IRQ7 setup time
(edge detection)
t
IRQES
160 — 100 — ns
IRQ0–IRQ7 setup time
(level detection)
t
IRQLS
160 — 100 — ns
IRQ0–IRQ7 hold time t
IRQEH
80 — 50 — ns
IRQOUT output delay
time
t
IRQOD
— 80 — 50 ns 20.50
Bus request setup time t
BRQS
80 — 50 — ns 20.51
Bus acknowledge delay
time 1
t
BACD1
— 80 — 50 ns
Bus acknowledge delay
time 2
t
BACD2
— 80 — 50 ns
Bus 3-state delay time t
BZD
— 80 — 50 ns
6
(3) Bus Timing
Table 20.20 Bus
Timing (1)
528 Description amended
Read data access time 2
*
6
t
ACC2
t
cyc
× (n+2) –
30
*
3
— ns 20.53, 20.54, 20.57–20.59
6
(3) Bus Timing
Table 20.20 Bus
Timing (2)
530 to
532
Newly added 6