APS6408L-3OBMx DDR OPI Xccela PSRAM
Double-Data-Rate OPI Xccela PSRAM
Specifications
Features
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Single Supply Voltage
o VDD = 2.7 to 3.6V
o VDDQ = 2.7 to 3.6V
Interface: Octal SPI with DDR Xccela mode, two
bytes transfers per one clock cycle
Performance: Clock rate up to 133MHz,
266MB/s read/write throughput
Organization: 64Mb, 8M x 8bits with 1024 bytes
page size
o Column address: AY0 to AY9
o Row address: AX0 to AX12
Refresh: Self-managed
Operating Temperature Range
o Tc = -40°C to +85°C(standard range)
o Tc= -40°C to +105°C (extended range)
Maximum Standby Current
o 350µA @ 105°C (extended range)
o 250µA @ 85°C
o 140µA @ 25°C
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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Low Power Features
o Partial Array Self-Refresh (PASR)
o Auto Temperature Compensated SelfRefresh (ATCSR) by built-in temperature
sensor
o User configurable refresh rate
Software Reset
Reset Pin Available
Output Driver LVCMOS with programmable
drive strength
Data Mask (DM) for write data
Data Strobe (DQS) enabled highspeed read
operation
Register Configurable write and read initial
latencies
Write Burst Length, maximum 1024 Byte,
minimum 2 Byte.
Wrap & Hybrid Burst in 16/32/64/1K lengths.
Linear Burst Command
Row Boundary Crossing (RBX)
o read operations can be enabled via Mode
Register
o RBX Write is NOT supported.
AP Memory reserves the right to change products and/or specifications without notice
@2019 AP Memory. All rights reserved
APS6408L-3OBMx DDR OPI Xccela PSRAM
Table of Contents
1
Table of Contents
1
Table of Contents ............................................................................................................. 2
2
Package Information ........................................................................................................ 3
3
Package Outline Drawing ................................................................................................. 4
4
Ordering Information ....................................................................................................... 5
5
Signal Table ...................................................................................................................... 6
6
Power-Up Initialization .................................................................................................... 7
7
8
9
6.1
Power-Up Initialization Method 1 (via. RESET# pin) ............................................... 7
6.2
Power-Up Initialization Method 2 (via. Global Reset) ............................................ 8
Interface Description ....................................................................................................... 9
7.1
Address Space ......................................................................................................... 9
7.2
Burst Type & Length................................................................................................ 9
7.3
Command/Address Latching ................................................................................... 9
7.4
Command Truth Table ............................................................................................ 9
7.5
Read Operation ..................................................................................................... 10
7.6
Write Operation .................................................................................................... 13
7.7
Control Registers ................................................................................................... 14
Electrical Specifications: ................................................................................................ 20
8.1
Absolute Maximum Ratings .................................................................................. 20
8.2
Pin Capacitance ..................................................................................................... 20
8.3
Decoupling Capacitor Requirement ...................................................................... 21
8.4
Operating Conditions ............................................................................................ 21
8.5
DC Characteristics ................................................................................................. 22
8.6
ISB Partial Array Refresh Current .......................................................................... 23
8.7
AC Characteristics ................................................................................................. 24
Change Log ..................................................................................................................... 26
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
2
Package Information
The APS6408L-3OBMx is available in miniBGA 24L package 6 x 8 x 1.2mm, ball pitch 1.0mm,ball size
0.4mm , package code “BA”.
Ball Assignment for MINIBGA 24L
1
A
2
3
4
5
NC
CE#
RST#
NC
B
NC
CLK
VSS
VDD
NC
C
VSSQ
RSU
DQS/
DM
ADQ2
NC
D
VDDQ
ADQ1
ADQ0
ADQ3
ADQ4
E
ADQ7
ADQ6
ADQ5
VDDQ
VSSQ
Top View
(Ball Down)
(6x8x1.2mm)(P1.0)(B0.4)
Note:
1. Part Number APS6408L-3OBM-BA for 64Mb.
2. RFU: Reserved for future use, which is reserved for 2nd CE#.
3. NC: No internal connection.
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
3
Package Outline Drawing
TOP VIEW
BOTTOM VIEW
A1 INDEX
A1 INDEX
A
1
2
3
4
5
5
4
3
2
1
DIMENSION
(mm)
SYM.
NOM.
MIN.
A
A
B
D
C
D1
SD
B
C
-
-
1.20
A1
0.25
0.30
0.35
A2
-
0.79
-
b
0.35
0.40
0.45
D
7.90
8.00
8.10
D1
E
D
e
D
E
E
e
E
B
d
0.10
4.00 BSC
5.90
6.00
E1
4.00 BSC
SE
1.00 TYP
SD
1.00 TYP
e
1.00 BSC
6.10
NOTE:
1. CONTROLLING DIMENSION : MILLIMETER.
2. REFERENCE DOCUMENT : JEDEC MO-207.
3. THE DIAMETER OF PRE-REFLOW SOLDER BALL IS Ø0.40mm.(0.35mm SMO)
SE
DETAIL B
E1
(4X)
MAX.
A
SOLDER BALL
Øb (24x PLACES)
f
DETAIL A
0.10
C
j
j
.
A2
A
0.15 m C A B
0.08 m C
SEATING PLANE
d
0.08
C
A1
C
SIDE VIEW
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
DETAIL A
4 of 26
DETAIL B
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APS6408L-3OBMx DDR OPI Xccela PSRAM
4
Ordering Information
Table 1: Ordering Information
Part Number
APS6408L-3OBM-BA
Temperature Range
Tc= -40°C to +85°C
Max Frequency
133 MHz
Note
24b Package
APS6408L-3OBMX-BA
Tc= -40°C to +105°C
133 MHz
24b Package
Note
OBM is standard part to support RBX read operation only.
A
P
S
64 08 L
3 OB
128
256
Die Gen.
32
16 IO Config.
S: Sync
PSRAM
AP Memory
X
Package Type
Blank: KGD
Temperature grade
Blank: default option
X: extended temp.
16: x16
08: x8
04: x1/x4
Density
256: 256M
128: 128M
64: 64M
32: 32M
16: 16M
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
Die Option
Interface
VCC
Blank: 1.8V
3: 3V
5 of 26
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APS6408L-3OBMx DDR OPI Xccela PSRAM
5
Signal Table
All signals are listed in Table 2.
Table 2: Signals Table
Symbol
VDD
VDDQ
VSS
VSSQ
A/DQ[7:0]
DQS/DM
Type
Power
Power
Ground
Ground
IO
IO
Description
Core supply 3.0V
IO supply 3.0V
Core supply ground
IO supply ground
Address/DQ bus [7:0]
DQ strobe clock during reads, Data mask during writes. DM is
active high. DM=1 means “do not write”.
CE#
CLK
RESET#
Input
Input
Input
Chip select, active low. When CE#=1, chip is in standby state.
Clock signal
Reset signal, active low. Optional, as the pad is internally tied
to a weak pull-up and can be left floating.
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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Comments
AP Memory reserves the right to change products and/or specifications without notice
@2019 AP Memory. All rights reserved
APS6408L-3OBMx DDR OPI Xccela PSRAM
6
Power-Up Initialization
Octal DDR products include an on-chip voltage sensor used to start the self-initialization process. VDD and VDDQ
must be applied simultaneously. When they reach a stable level at or above minimum VDD, the device is in Phase 1
and will require 150μs to complete its self-initialization process. The user can then proceed to Phase 2 of the
initialization described in this section.
During Phase 1 CE# should remain HIGH (track VDD within 200mV); CLK should remain LOW.
After Phase 2 is complete the device is ready for operation.
6.1
Power-Up Initialization Method 1 (via. RESET# pin)
The RESET# pin can be used to initialize the device during Phase 2 as follows:
Phase 1
Phase 2
VDDmin
Device ready for
normal operation
tPU ≥ 150µs
VDD/VDDQ
Device Initialization
CE#
tRP
RESET#
tRST ≥ 2µs
Don’t Care
Figure 1. Power-Up Initialization Method 1 RESET#
The RESET# pin can also be used at any time after the device is initialized to reset all register contents. Memory
content is not guaranteed. Timing requirements for RESET# usage are shown below.
CE#
tRP
RESET#
tRST
Figure 2. RESET# Timing
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APS6408L-3OBMx DDR OPI Xccela PSRAM
6.2
Power-Up Initialization Method 2 (via. Global Reset)
As an alternate power-up initialization method, After the Phase 1 150μs period the Global Reset command is
used to reset the device in Phase 2 as follows:
Phase 1
Phase 2
VDDmin
tPU ≥ 150µs
VDD/VDDQ
Device Initialization
tRST ≥ 2µs
Write
Global Reset
Device ready for
normal operation
Figure 3. Power-Up Initialization Method 2 Timing with Global Reset
The Global Reset command resets all register contents. Memory content is not guaranteed. The command
frame is made of 4 clocked CE# lows. Clocking is optional during tRST. The Global Reset command sequence is
shown below. Note that Global Reset command can be used ONLY as Power-up initialization.
Clocking Optional
CLK
t
t
CSP
CHD
t
RST
CE#
Global Reset begins
t
A/DQ[7:0]
SP
INST
t
HD
DQS/DM
Don’t Care
Global Reset Identified
(INST[7:0] = `hFF)
Figure 4: Global Reset
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APS6408L-3OBMx DDR OPI Xccela PSRAM
7
7.1
Interface Description
Address Space
Octal DDR PSRAM device is byte-addressable. Memory accesses are required to start on even addresses
(A[0]=’0). Mode Register accesses allow both even and odd addresses.
7.2
Burst Type & Length
Read and write operations are default Hybrid Wrap 32 mode. Other burst lengths of 16, 32, 64 or 1K bytes in
standard or Hybrid wrap modes are register configurable (see Table 18) The device also includes command for
Linear Bursting. Bursts can start on any even address. Write burst length has a minimum of 2 bytes. Read has no
minimum length. Both write and read have no restriction on maximum burst length as long as tCEM is met.
7.3
Command/Address Latching
After CE# goes LOW, instruction code is latched on 1st CLK rising edge. Access address is latched on the 3rd, 4th,
5th & 6th CLK edges (2nd CLK rising edge, 2nd CLK falling edge, 3rd CLK rising edge, 3rd CLK falling edge).
7.4
Command Truth Table
The Octal DDR PSRAM recognizes the following commands specified on the INST (Instruction) cycle defined by
the Address/DQ pins.
1st CLK
Command
Sync Read
Sync Write
Sync Read (Linear Burst)
Sync Write (Linear Burst)
Mode Register Read
Mode Register Write
Global Reset
00h
80h
20h
A0h
40h
C0h
FFh
Remarks:
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
×
A3
A2
A1
A0
MA
2nd CLK
A3
A3
A3
A3
3rd CLK
A2
A2
A2
A2
×
×
A1
A1
A1
A1
A0
A0
A0
A0
MA
MA
×
= don't care (VIH/VIL)
= unused address bits are reserved
= 1'bx, RA[12:6], unused address bit is reserved
= RA[5:0],CA[9:8]
= CA[7:0]
= Mode Register Address
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APS6408L-3OBMx DDR OPI Xccela PSRAM
7.5
Read Operation
After address latching, the device initializes DQS/DM to ‘0 from next CLK rising edge of the 3rd clock cycle (A1).
See Figure 5 below.
Output data is available after LC latency cycles, as shown in Figure 7 & Figure 8, LC is defined in Table 5 and
Table 6. When data is valid, A/DQ[7:0] and DQS/DM follow the timing specified in Figure 9. Synchronous timing
parameters are shown in Table 28 & Table 29.
In case of internal refresh insertion, variable latency output data may be delayed by up to (LC*2) latency cycles
as shown in Figure 7. True variable refresh pushout latency can be anywhere between LC to LCx2. The 1st
DQS/DM rising edge after read pre-amble indicates the beginning of valid data.
t
RC
CLK
t
t
CSP
CHD
Latency Count 5
CE#
t
CPH
t
t
HZ
SP
A/DQ[7:0]
A3
INST
t
A2
A1
A0
D0
High-Z
HD
t
D1
D2
D3
High-Z
INST
DQSCK
t
CQLZ
DQS/DM
High-Z
High-Z
A3=Addr[31:24]
A2=Addr[23:16]
A1=Addr[15:8]
A0=Addr[7:0]
READ Burst Identified
(INST[7:6] = `b00)
Don’t Care
Undefined
Figure 5: Synchronous Read
If RBX has been enabled (MR8[3] written to 1) and a Linear Burst Command issued, then Wrap settings
(MR8[2:0] are ignored and Read operations are allowed to cross row boundaries as shown in Figure 6.
CLK
t
CSP
Latency Count 3
CE#
t
A/DQ[7:0]
SP
INST
A3
A2
A1
A0
D0
High-Z
D1
D2
D3
t
HD
t
t
DQS/DM
CQLZ
t
DQSCK
RBXwait
High-Z
Linear READ Burst Identified
(INST[7:0] = `h20)
A3=Addr[31:24]
A2=Addr[23:16]
A1=Addr[15:8]
A0=Addr[7:0]
Don’t Care
Undefined
Figure 6: Synchronous Read with RBX (Starting address ‘3FE)
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
1
2
3
4
5
6
CLK
A/DQ[7:0]
INST
A3
DQS/DM
A/DQ[7:0]
A2
A1
A3
D0
High-Z
D1
D2
D3
D4
D5
D6
D7
D8
D0
D1
D2
Variable Latency Code 3, no refresh
High-Z
INST
A0
A2
A1
A0
High-Z
Variable Latency Code 3, maximum refresh pushout
DQS/DM
High-Z
Figure 7: Variable Read Latency Refresh Pushout
1
2
3
4
5
CLK
Latency Code 5
A/DQ[7:0]
INST
A3
A2
A1
A0
D0
High-Z
D1
D2
D3
t
DQSCKMIN
DQS/DM
A/DQ[7:0]
High-Z
INST
A3
A2
A1
A0
D0
High-Z
D1
D2
D3
t
DQSCKMAX
DQS/DM
High-Z
Figure 8: Read Latency & tDQSCK
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APS6408L-3OBMx DDR OPI Xccela PSRAM
t
t
CL
t
CH
CLK
CLK
t
A/DQ[7:0]
DQSQ
D0
High-Z
t
DQSCKMIN
t
D1
QH
D2
D3
t
QH
t
DQSCKMIN
DQS/DM
t
A/DQ[7:0]
DQSQ
D0
High-Z
t
t
DQSCKMAX
D1
D2
D3
t
QH
t
QH
DQSCKMAX
DQS/DM
Note: All DQ are valid tDQSQ after the DQS edge, regardless of tDQSCK
Undefined
Figure 9: Read DQS/DM & DQ timing
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
7.6
Write Operation
A minimum of 2 bytes of data must be input in a write operation. In the case of consecutive short burst writes,
tRC must be met by issuing additional CE# high time between operations. Single-byte write operations can be
performed by masking the un-written byte with DQS/DM as shown in Figure 10.
t
RC
CLK
t
CSP
t
CHD
Latency Count 3
CE#
t
CPH
t
SP
A/DQ[7:0]
INST
A3
A2
A1
A0
D0
D1
D2
D3
D4
D5
D6
D7
High-Z
INST
t
HD
DQS/DM
High-Z
High-Z
WRITE Burst Identified
(INST[7:6] = `b10)
A3=Addr[31:24]
A2=Addr[23:16]
A1=Addr[15:8]
A0=Addr[7:0]
D1, D3, D4 & D6 masked
Don’t Care
Figure 10: Synchronous Write followed by any Operation
tCH
tCL
tCLK
CLK
tDH
tDS
DQS/DM
DM0
DM1
DM2
tDH
tDS
DQ
D0
D1
DM3
D2
D3
Don’t Care
Figure 11: Write DQS/DM & DQ Timing
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
7.7
Control Registers
Register Read is shown below. Mode Address in command determines which Mode Register is read from as
Data0 (see chart in the Figure below).
t
RC
CLK
t
t
CSP
CHD
Latency Count 5
CE#
t
t
t
A/DQ[7:0]
SP
INST
MA
D0
High-Z
t
HD
t
D1
D0
CPH
HZ
D1
INST
High-Z
DQSCK
t
DQS/DM
CQLZ
High-Z
High-Z
MA
`h00
`h01
`h02
`h03
`h04
`h08
Register READ Identified
(INST[7:0] = `h40)
D0
MR0
MR1
MR2
MR3
MR4
MR8
Don’t Care
D1
MR1
MR2
MR3
MR4
MR8
MR0
Undefined
Figure 12: Register Read
t
RC
CLK
t
t
CHD
CSP
CE#
t
t
A/DQ[7:0]
CPH
t
DS
SP
INST
MA#
t
MR#
t
HD
High-Z
INST
DH
DQS/DM
Don’t Care
Register WRITE Identified
(INST[7:0] = `hC0)
Figure 13: Register Write
Register Writes are Latency 1, whereas Register Reads use the same MR0[4:2] settings as burst reads (see
Table 5). Registers 0, 4 & 8 are read and writable, and Registers 1, 2 and 3 are read-only. Register mapping is
shown in Table 3. Note that MR0[6], MR0[7], MR4[4] and MR8[7] must be written to b'0.
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 3: Mode Register Table
MR No. MA[7:0]
0
`h00
1
`h01
2
`h02
3
`h03
4
`h04
8
`h08
Access OP7 OP6 OP5 OP4 OP3 OP2 OP1 OP0
'00'
Drive Str.
R/W
LT Read Latency Code
rsvd.
Vendor ID
R
rsvd.
Dev ID
Density
R
GB
rsvd.
R
RBXen VCC SRF
Write Latency Code
PASR
R/W
'0'
RF
rsvd.
BL
R/W
'0'
RBX BT
Table 4: Read Latency Type (MR0[5])
Latency Type
MR0[5]
LT
0
Variable (default)
1
Fixed
Table 5: Read Latency Codes MR0[5:2]
MR0[4:2]
000
001
010
others
VL Codes (MR0[5]=0)
Latency (LC) Max push out (LCx2)
3
6
4
8
5 (default)
10
reserved
FL Codes (MR0[5]=1)
Latency (LCx2)
6
8
10
Max Input CLK Freq (MHz)
Standard
Extended
66
66
109
109
133
133
-
Table 6: Operation Latency Code Table
VL (default)
No Refresh
Refresh
Read
LC
Up
to LCx2
Memory
Write
WLC
Read
LC
Register
Write
1
*Note: see Table 15 for WLC settings.
Type
Operation
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
15 of 26
FL
LCx2
WLC
LC
1
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 7: Drive Strength Codes MR0[1:0]
Codes
‘00
‘01
‘10
‘11
Drive Strength
Half (50Ω)
1/4 (100Ω default)
1/8 (200Ω)
1/16 (400Ω)
Table 8: Vendor ID mapping MR1[4:0]
Vendor ID
01101: APM
Table 9: Good-Die Bit MR2[7]*
Codes
Good Die ID
‘1
PASS
‘0
FAIL
*Note: Default is FAIL die, and only mark PASS after all tests passed.
Table 10: Device ID MR2[4:3]
Codes
‘00
‘01
‘10
others
Device ID
Generation 1
Generation 2
Generation 3 (default)
reserved
Table 11: Device Density mapping MR2[2:0]
MR2[2:0]
‘001
‘011
‘101
‘111
others
Density
32Mb
64Mb
128Mb
256Mb
reserved
Table 12: Row Boundary Crossing Enable (MR3[7])
MR3[7] (read-only)
0
1
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
RBXen
RBX not supported
RBX supported via MR8[3]=1
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 13: Operating Voltage Range (MR3[6])
MR3[6]
0
1
VCC
1.8V
3V (default)
Table 14: Self Refresh Flag (MR3[5])
MR3[5] (read-only)
Self Refresh Flag
0
Slow Refresh (allowed via MR4[3]=1, otherwise Fast Refresh)
1
Fast Refresh
MR3[5] is a refresh indicator that corresponds to device internal temperature. This bit will indicate 0 when the
temperature is low enough to allow a slow frequency refresh rate.
Table 15: Write Latency MR4[7:5]
Default powered up behavior is WL 5
MR4[7:5]
000
100
010
others
Write Latency Codes
(WLC)
3
4
5 (default)
reserved
Fmax (MHz)
66
109
133
-
Table 16: Refresh Frequency MR4[3]
MR4[3]
0
1
Refresh Frequency
Fast Refresh (default)
Enables Slow Refresh when temperature allows
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 17: PASR MR4[2:0]
The PASR bits restrict refresh operation to a portion of the total memory array. This feature allows the device
to reduce standby current by refreshing only that part of the memory array required by the host system. The
refresh options are full array, one-half array, one-quarter array, one-eighth array, or none of the array. The
mapping of these partitions can start at either the beginning or the end of the address map.
Codes
‘000
‘001
‘010
‘011
‘100
‘101
‘110
‘111
Refresh Coverage
Full array (default)
Bottom 1/2 array
Bottom 1/4 array
Bottom 1/8 array
None
Top 1/2 array
Top 1/4 array
Top 1/8 array
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
64Mb
Address Space
000000h-7FFFFFh
000000h-3FFFFFh
000000h-1FFFFFh
000000h-0FFFFFh
0
400000h-7FFFFFh
600000h-7FFFFFh
700000h-7FFFFFh
18 of 26
Size
8M x8
4M x8
2M x8
1M x8
0M
4M x8
2M x8
1M x8
Density
64Mb
32Mb
16Mb
8Mb
0Mb
32Mb
16Mb
8Mb
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 18: Burst Type MR8[2], Burst Length MR8[1:0]
By default the device powers up in 32 Byte Hybrid Wrap. In non-Hybrid burst (MR8[2]=0), MR8[1:0] sets the
burst address space in which the device will continually wrap within. If Hybrid burst wrap is selected (MR8[2]=1),
the device will burst through the initial wrapped burst length once, then continue to burst incrementally up to
maximum column address (1K) before wrapping around within the entire column address space. Burst length
(MR8[1:0]) can be set to 16,32,64 & 1K lengths.
MR8[2]
‘0
‘0
‘0
‘0
‘1
‘1
‘1
‘1
MR8[1:0]
‘00
‘01
‘10
‘11
‘00
‘01
‘10
‘11
Burst Length
16 Byte Wrap
32 Byte Wrap
64 Byte Wrap
1K Byte Wrap
16 Byte Hybrid Wrap
32 Byte Hybrid Wrap (default)
64 Byte Hybrid Wrap
1K Byte Wrap
Example of Sequence of Bytes During Wrap
Starting Address
Byte Sequence
4
[4,5,6,…15,0,1,2,…]
4
[4,5,6,…31,0,1,2,…]
4
[4,5,6,…63,0,1,2,…]
4
[4,5,6,…1023,0,1,2,…]
2
[2,3,4,…15,0,1],16,17,18,…1023,0,1,…
2
[2,3,4,…31,0,1],32,33,34,…1023,0,1,…
2
[2,3,4,…63,0,1],64,65,66,…1023,0,1,…
2
[2,3,4,…1023,0,1,2,…]
The Linear Burst Commands (INST[5:0]=6’b100000) override MR8[2:0] settings and forces the current array
read or write command to do 1K Byte Wrap (equivalent to having MR8[1:0] set to 2’b11). The burst continues
linearly from the starting address and at the end of the page, then wraps back to the beginning of the page. This
special burst instruction can be used on both array write and read.
Table 19: Row Boundary Crossing Read Enable MR8[3]
This register setting applies to Linear Burst reads only on RBX enabled devices (MR3[7]=1). Default write and
read burst behavior is limited within the 1K (CA=’h000 -> ‘h3FF) column address space. Setting this bit high will
allow Linear Burst reads to cross over into the next Row (RA+1).
MR8[3]
0
1
RBX Read
Reads stay within the 1K column address space
Reads cross row at 1K boundaries
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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APS6408L-3OBMx DDR OPI Xccela PSRAM
8
Electrical Specifications:
8.1
Absolute Maximum Ratings
Table 20: Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Voltage to any ball except VDD, VDDQ relative to VSS
VT
VDD
Voltage on VDDQ supply relative to VSS
VDDQ
-0.4 to VDD/VDDQ+0.4
-0.4 to +4
-0.4 to +4
V
Voltage on VDD supply relative to VSS
Storage Temperature
TSTG
-55 to +150
°C
Notes
Notes
V
V
1
1: Storage temperature refers to the case surface temperature on the center/top side of the PSRAM.
Caution:
Exposing the device to stress above those listed in Absolute Maximum Ratings could cause permanent damage.
The device is not meant to be operated under conditions outside the limits described in the operational section of
this specification. Exposure to Absolute Maximum Rating conditions for extended periods may affect device
reliability.
8.2
Pin Capacitance
Table 21: Bare Die Pin Capacitance
Parameter
Input Pin Capacitance
Output Pin Capacitance
Note
1: spec’d at 25°C.
Symbol
CIN
COUT
Min
Symbol
CIN
COUT
Min
Parameter
Symbol
Load Capacitance
CL
Note
1: System CL for the use of package
Min
Max
2
3
Unit
pF
pF
Notes
Max
6
8
Unit
pF
pF
Notes
Max
15
Unit
pF
Notes
VIN=0V
VOUT=0V
Table 22: Package Pin Capacitance
Parameter
Input Pin Capacitance
Output Pin Capacitance
Note
1: spec’d at 25°C.
VIN=0V
VOUT=0V
Table 23: Load Capacitance
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8.3
Decoupling Capacitor Requirement
It is required to have a decoupling capacitor on VDD pin for IO switchings and psram internal transient events.
A low ESR 1μF ceramic cap is recommended. To minimize parasitic inductance, place the cap as close to VDD pin
as possible. An optional 0.1μF can further improve high frequency transient response.
CE#
VDD
C0 = 100nF
CLK
A/DQ
8.4
C1= 1µF
VSS
Operating Conditions
Table 24: Operating Characteristics
Parameter
Min
Max
Unit
Notes
°C
Operating Temperature (extended)
-40
105
1
Operating Temperature (standard)
-40
85
°C
Note
1: Extended temp range of -40 to 105°C is only characterized; test condition is -32 to 105°C.
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8.5
DC Characteristics
Table 25: DC Characteristics
Symbol
VDD
VDDQ
VIH
VIL
VOH
VOL
ILI
ILO
Parameter
Min
Supply Voltage
2.7
I/O Supply Voltage
2.7
Input high voltage
VDDQ-0.4
Input low voltage
-0.2
Output high voltage (IOH=-0.2mA)
0.8 VDDQ
Output low voltage (IOL=+0.2mA)
Input leakage current
Output leakage current
Read/Write @ 13MHz
ICC
Read/Write @133MHz
ISBEXT
Standby current (extended temp)
ISBSTD
Standby current (standard temp)
ISBSTDroom Standby current (standard room temp)
Note
1: Spec’d up to 105°C.
2: Current is only characterized.
3: Without CLK toggling. ISB will be higher if CLK is toggling.
4: Slow Refresh.
5: Typical ISBSTDroom 100µA
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
22 of 26
Max
3.6
3.6
VDDQ+0.2
0.4
0.2 VDDQ
1
1
3
14
350
250
140
Unit
V
V
V
V
V
V
µA
µA
mA
mA
µA
µA
µA
Notes
2
2
1,3
3
3,4,5
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APS6408L-3OBMx DDR OPI Xccela PSRAM
8.6
ISB Partial Array Refresh Current
Table 26: Typical PASR Current @ 25°C
Standby Current @ 25°C
PASR
ISB –typical mean
Full
100
1/2
90
1/4
85
1/8
80
Unit
µA
µA
µA
µA
Notes
1,2
1,2
1,2
1,2
Unit
µA
µA
µA
µA
Notes
2
2
2
2
Table 27: Typical PASR Current @ 85°C
Standby Current @ 85°C
PASR
ISB –typical mean
Full
195
1/2
169
1/4
156
1/8
150
Note
Note
1: Slow Refresh current is only attainable by enabling Slow Refresh Frequency (see Table 16)
2: PASR Current is only characterized based on 64M density without CLK toggling.
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8.7
AC Characteristics
Table 28: READ/WRITE Timing
-7 (133MHz)
Symbol
tCLK
tCH/tCL
tKHKL
tCPH
tCEM
tCEM
tCSP
tCHD
tSP
tHD
tRBXwait
tHZ
tRC
tRC
tPU
tRP
tRST
Parameter
CLK period
Clock high/low width
CLK rise or fall time
CE# HIGH between subsequent burst
operations
Min
7.5
0.45
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
0.55
1.0
18
CE# low pulse width
CE# low pulse width
CE# setup time to CLK rising edge
CE# hold time from CLK falling edge
Setup time to active CLK edge
Hold time from active CLK edge
Row Boundary Crossing Wait Time
Chip disable to DQ/DQS output high-Z
Write Cycle
Read Cycle
Device Initialization
RESET# low pulse width
Reset to CMD valid
Max
3
2.5
2.5
1.1
1.1
30
60
60
150
1
2
24 of 26
-9 (109MHz)
Min
9.2
0.45
Max
0.55
1.2
18
Unit
ns
tCLK
ns
Notes
ns
4
4
µs
Standard temp
1
1
µs
Extended temp
Minimum 3 clocks
65
6
tCLK
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
65
6
3
2.5
2.5
1.1
1.1
30
60
60
150
1
2
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APS6408L-3OBMx DDR OPI Xccela PSRAM
Table 29: DDR timing parameters
Symbol
tCQLZ
Parameter
Clock rising edge to DQS low
tDQSCK
tDQSQ
tDS
tDH
tHP
tQHS
tQH
DQS output access time from CLK
DQS – DQ skew
DQ and DM input setup time
DQ and DM input hold time
Half Period
Datahold skew factor
DQ output hold time from DQS
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
-7 (133MHz)
Min
Max
1
6
2
1.1
1.1
25 of 26
5.5
0.6
-9 (109MHz)
Min
Max
1
6
2
1.1
1.1
= min (tCH, tCL)
0.75
= tHP - tQHS
5.5
0.6
0.9
Unit
ns
Notes
ns
ns
ns
ns
ns
ns
ns
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APS6408L-3OBMx DDR OPI Xccela PSRAM
9
Change Log
Version
Date
Description
1.0
Aug 24, 2017
Initial Version
1.5
Oct 31, 2017
Removed Hybrid 64, modified Write 4 bytes & absolute voltage, VIL/VIH
1.6
Nov 13, 2017
Modified spec of ISB, PASR, ICC
1.7
Dec 21, 2017
Revised RLC, WLC tables
1.8
Jan 01, 2018
Revised Fmax of bare die to 200MHz
1.9
Jun 13, 2018
Added part APS6408L-3OBM
2.0
Nov 26, 2018
Updated some latency wording; added operation latency table
2.1
Jan 17, 2019
Updated temperature; ordering information; unified part number to OBM for RBX
read & special parts of STM32L4+ family
3.1a
Aug 23 2019
Updated section 2, 4, 8.5, 8.7, Table 23 and Table 25 from OBM v3.1a, Updated
section 6 from OBM BA v2.0; Updated section 6 from OC v1.7; Updated Table 5, Table
13, Table 15
3.2
Sep 28, 2019
Updated header and page 1; updated Table 26 and Table 27
3.3
Oct 24, 2019
Updated defaults setting in Table 7
3.4
Nov 07, 2019
Updated notes for Table 3, Table 14, Table 18, Table 25, section 7.5 and section 8.3
3.5
Nov 14, 2019
Updated notes in section 7.5, Table 15, Table 17 and Table 28
3.5a
Nov 20, 2019
Update typo in section 7.7, 8.3 and 8.6
3.5b
Dec 13, 2019
Revised the typo in section 7.7
APM Octal PSRAM Datasheet.pdf - Rev. 3.5b Dec 13, 2019
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