HD6432670 Hitachi, HD6432670 Datasheet - Page 252

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

The setting of bits TPC1 and TPC0 is also valid for T
Rev. 2.0, 04/02, page 206 of 906
Read
Write
Address bus
DQMU, DQML
DQMU, DQML
Precharge-sel
Data bus
Data bus
SDRAM
Figure 6.47 Example of Timing with Two-State Precharge Cycle
CKE
CKE
ø
ø
(TPC1 = 0, TPC0 = 1, SDWCD = 0, CAS Latency 2)
PALL
PALL
T
p1
Column address
NOP
NOP
T
p2
Row address
Row address
ACTV
ACTV
High
High
T
r
p
states in refresh cycles.
READ
NOP
T
c1
Column address
WRIT
T
cl
NOP
NOP
T
c2