W632GU8KB Datasheet, PDF (139/160 Pages) Winbond – 32M X 8 BANKS X 8 BIT DDR3L SDRAM

W632GU8KB
AC Timing and Operating Condition for -11 speed grade, continued
SYMBOL
SPEED GRADE
PARAMETER
DDR3L-1866 (-11)
MIN.
MAX.
Command and Address Timing
tDLLK DLL locking time
512

tRTP
Internal READ Command to PRECHARGE
Command delay
max(4nCK, 7.5nS)

tWTR
Delay from start of internal write transaction to
internal read command
max(4nCK, 7.5nS)

tWR WRITE recovery time
15

tMRD Mode Register Set command cycle time
4

tMOD Mode Register Set command update delay
max(12nCK, 15nS)

tCCD CAS# to CAS# command delay
4

tDAL(min) Auto precharge write recovery + precharge time
WR + roundup(tRP(min)/ tCK(avg))
tMPRR Multi-Purpose Register Recovery Time
1

tRRD
ACTIVE to ACTIVE command period for 1KB page
size
max(4nCK, 5nS)

tFAW Four activate window for 1KB page size
27

tIS(AC135)
Command and Address
setup time to CK, CK#
Base specification
VREF @ 1 V/nS
65
200
tIS(AC125)
Command and Address
setup time to CK, CK#
Base specification
VREF @ 1 V/nS
150
275
tIH(DC90)
Command and Address
hold time from CK, CK#
Base specification
VREF @ 1 V/nS
110
200
tIPW
Control and Address input pulse width for each
input
535

Calibration Timing
tZQinit Power-up and RESET calibration time
max(512nCK, 640nS)

tZQoper Normal operation Full calibration time
max(256nCK, 320nS)

tZQCS Normal operation Short calibration time
max(64nCK, 80nS)

Reset Timing
tXPR Exit Reset from CKE HIGH to a valid command
max(5nCK, 170nS)

Self Refresh Timing
tXS
Exit Self Refresh to commands not requiring a
locked DLL
max(5nCK, 170nS)

tXSDLL
Exit Self Refresh to commands requiring a locked
DLL
tDLLK(min)

tCKESR
Minimum CKE low width for Self Refresh entry to
exit timing
tCKE(min) + 1nCK

tCKSRE
Valid Clock Requirement after Self Refresh Entry
(SRE)
max(5 nCK, 10nS)

tCKSRX
Valid Clock Requirement before Self Refresh Exit
(SRX)
max(5 nCK, 10nS)

Refresh Timing
tRFC REF command to ACT or REF command time
160

tREFI
Average periodic
refresh Interval
0°C ≤ TCASE ≤ 85°C
85°C < TCASE ≤ 95°C

7.8

3.9
UNITS NOTES
nCK
8
8, 26
nS
8, 26
nCK
nCK
nCK
6
nCK
29
8
nS
8
pS
9, 41
pS 9, 41, 42
pS
9, 41
pS 9, 41, 42
pS
9, 41
pS 9, 41, 42
pS
10
33
34
nCK
35
nS
36
μS
μS
- 139 -
Publication Release Date: Jan. 20, 2015
Revision: A05