UPD720122GC-9EU-A Renesas Electronics America, UPD720122GC-9EU-A Datasheet - Page 60

• Manufacturer Part Number: UPD720122GC-9EU-A
• Manufacturer: Renesas Electronics America

Specifications of UPD720122GC-9EU-A

• Lead Free Status / RoHS Status: Supplier Unconfirmed

(b) External local bus 8-bit mode DMA single mode write transfer
(Overall)
58
L8T35
L8T36
L8T37
L8T38
L8T39
L8T40
L8T41
L8T44
EP2_DACKB
EP2_DRQB
EP2_WRB
LD7 to LD0
EP2_TCB
Symbol
Remarks 1.
Note
The difference in specifications when compared with L8T22 is that BIU processing is performed for EP1 and
that EPC2 processing is performed for EP2.
DMA request acknowledge setup time (EP2_WRB ↓ )
DMA request off time 1 (EP2_DACKB ↓ )
DMA single mode write transfer cycle time
Write command width
Write command inactive time
Write data setup time (EP2_WRB ↑ )
Write data hold time (EP2_WRB ↑ )
DMA request acknowledge hold time (EP2_WRB ↑ )
2.
3.
L8t
High Level
Use of EP1_TCB is prohibited in the 8-bit external local bus mode. Clamp this signal to the inactive
status.
LD15 to 8 are undefined in the 8-bit external local bus mode (these signals are invalid when input and
undefined when output).
It is assumed that the external pin capacitance is 15 pF (data bus = 50 pF).
L8t
36
37
L8t
L8t
L8t
40
35
38
1 cycle
L8t
L8t
L8t
39
44
Parameter
41
Data Sheet S16685EJ3V0DS
L8t
Min.
88
54
34
10
0
−
0
0
40
N − 1 cycle
Typ.
L8t
41
µ
54
PD720122
Max.
∞
∞
∞
∞
∞
∞
∞
Note
N cycle
L8t
44
Unit
ns
ns
ns
ns
ns
ns
ns
ns