ak7712a-vt AKM Semiconductor, Inc., ak7712a-vt Datasheet - Page 18

• Manufacturer Part Number: ak7712a-vt
• Description: Built-in 20-bit Adc/dac Sophisticated Audio Dsp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
0180-E-02
3)Read/Write Interface Timing of External RAM
4) Refresh Interface Timing of Pseudo SRAM(External RAM)
5) Read/Write Interface Timing of Pseudo SRAM(External RAM)
(AVDD,DVDD,AVB,DVB=5.0V±5%, Ta=25 C, CL=20pF)
(AVDD,DVDD,AVB,DVB=5.0V±5%, Ta=25 C, CL=20pF)
(AVDD,DVDD,AVB,DVB=5.0V±5%, Ta=25 C, CL=20pF)
Address delay time from OE " " (writing)
Address delay time from OE " " (reading)
Access time
Address set-up time
Data set time
Data hold time
Pulse width to write
Auto refresh cycle
Pulse width of refresh command
Delay time of refresh command
Pre-charge time of refresh
Address delay time from OE " " (writing)
Address delay time from OE " " (reading)
Column address hold time
SC mode read/write cycle
Address setup time
Pulse width of chip enable
Column address hold time (after write)
Chip enable time
Column address setup time
Pulse width of write command
Data set time
Data hold time
Parameter
Parameter
Parameter
Symbol
Symbol
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AOEW
AOER
WCY
WD
DS
DH
WP
FC
FAP
RFD
FP
AOEW
AOER
CAH
RSC
AS
CE
AHW
CW
ASW
WP
DW
DH
- 18 -
-15
-15
min
min
min
105
145
100
110
180
18 .432
10
80
10
60
80
35
80
10
10
95
10
35
50
10
18.432
18.432
(Static Column Mode)
max
max
max
15
70
15
70
-18
-18
min
min
min
XTI(MHz)
115
XTI(MHz)
162
110
XTI(MHz)
120
200
105
12
90
12
70
90
40
90
12
12
12
40
60
12
16.934
16.934
16.934
max
max
max
18
80
18
80
-20
-20
min
min
min
170
135
210
135
160
170
135
280
140
15
15
90
60
15
15
15
60
90
15
12.288
12.288
12.288
[AK7712A-VT]
max
max
max
110
110
20
20
1997/12
Units
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns