Toshiba H1 SERIES TLCS-900 - Manual (Page 224)

TMP92CM22
2007-02-16 92CM22-222
4.2.2 Page ROM Read Cycle
(1) 3-2-2-2 mode
Vcc
= 3.3 ± 0.3 V/fc = 4 to 40 MHz/Ta = −40 to 85°C
No.
Parameter Symbol Min Max
f
SYS
=
20 MHz
(fc
= 40 MHz)
f
SYS
=
125 kHz
(fc
= 4 MHz)
Unit
1 System clock period (
= T)
t CYC 50 8000 50 8000 ns
2 A0, A1 → D0 to D31 input t
AD2
2.0T − 50 50 15950 ns
3 A2 to A23
→ D0 to D31 input
t AD3 3.0T
− 50
100 23950 ns
4 RD falling → D0 to D31 input t
RD3
2.5T − 45 80 19955 ns
5 A0 to A23 invalid
→ D0 to D31 hold
t HA 0 0 0 ns
6 RD rising → D0 to D31 hold t
HR
0 0 0 ns
AC condition
• Output: High = 0.7 Vcc, Low = 0.3 Vcc, C
L
= 50 pF
• Input: High = 0.9 Vcc, Low = 0.1 Vcc
(2) Page ROM read cycle (3-2-2-2 mode)
t
HA
Data
input Data
input Data
input Data
input
t
CYC
A0 to A23
CLKOUT
D0 to D31
RD
CS2
+0 +1 +2 +3
t
AD3 t AD2
t AD2 t AD2
t
HR t
HA t HA
t
HA
t
AD3