HANBIT HSD32M64F8R-13

HANBit
HSD32M64F8R
Synchronous DRAM Module 256Mbyte (32Mx64bit), SMM ,16Mx16,
4Banks, 8K Ref. 3.3V
Part No. HSD32M64F8R
GENERAL DESCRIPTION
The HSD32M64F8R is a 32M x 64 bit Synchronous Dynamic RAM high-density memory module. The module consists
of
eight
CMOS 16M x 8 bit with 4banks Synchronous DRAMs in TSOP-II 400mil packages and 2K EEPROM in 8-pin
TSSOP package on a 120-pin glass-epoxy. Three 0.1uF decoupling capacitors are mounted on the printed circuit board in
parallel for each SDRAM. The HSD32M64F8R is a SMM(Stackable Memory Module type) .Synchronous design allows
precise cycle control with the use of system clock. I/O transactions are possible on every clock cycle. Range of operating
frequencies, programmable latencies allows the same device to be useful for a variety of high bandwidth, high
performance memory system applications All module components may be powered from a single 3.3V DC power supply
and all inputs and outputs are LVTTL-compatible.
FEATURES
• Part Identification
HSD32M64F8R-10L : 100MHz (CL=3)
HSD32M64F8R-10 : 100MHz (CL=2)
HSD32M64F8R-13 : 133MHz (CL=3)
• Burst mode operation
• Auto & self refresh capability (8K Cycles/64ms)
• LVTTL compatible inputs and outputs
• Single 3.3V ±0.3V power supply
• MRS cycle with address key programs
- Latency (Access from column address)
- Burst length (1, 2, 4, 8 & Full page)
- Data scramble (Sequential & Interleave)
• All inputs are sampled at the positive going edge of the system clock
• The used device is 4M x 16bit x 4Banks SDRAM
URL:www.hbe.co.kr
REV.1.0(August.2002).
-1-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
PIN ASSIGNMENT
TOP
BOTTOM
P1
P3
P2
P4
PIN
Symbo
l
PIN
Symbo
l
PIN
Symbo
l
PIN
Symbol
PIN
Symb
ol
PIN
Symb
ol
PI
N
Symb
ol
PIN
Symbo
l
1
Vcc
31
Vss
1
Vss
31
Vcc
1
Vcc
31
Vss
1
Vss
31
Vcc
2
DQ32
32
DQ0
2
DQ16
32
DQ48
2
DQ32
32
DQ0
2
DQ16
32
DQ48
3
DQ33
33
DQ1
3
DQ17
33
DQ49
3
DQ33
33
DQ1
3
DQ17
33
DQ49
4
DQ34
34
DQ2
4
DQ18
34
DQ50
4
DQ34
34
DQ2
4
DQ18
34
DQ50
5
DQ35
35
DQ3
5
DQ19
35
DQ51
5
DQ35
35
DQ3
5
DQ19
35
DQ51
6
DQ36
36
DQ4
6
DQ20
36
DQ52
6
DQ36
36
DQ4
6
DQ20
36
DQ52
7
DQ37
37
DQ5
7
DQ21
37
DQ53
7
DQ37
37
DQ5
7
DQ21
37
DQ53
8
DQ38
38
DQ6
8
DQ22
38
DQ54
8
DQ38
38
DQ6
8
DQ22
38
DQ54
9
DQ39
39
DQ7
9
DQ23
39
DQ55
9
DQ39
39
DQ7
9
DQ23
39
DQ55
10
Vcc
40
Vss
10
Vss
40
Vcc
10
Vcc
40
Vss
10
Vss
40
Vcc
11
DQ40
41
DQ8
11
DQ24
41
DQ56
11
DQ40
41
DQ8
11
DQ24
41
DQ56
12
DQ41
42
DQ9
12
DQ25
42
DQ57
12
DQ41
42
DQ9
12
DQ25
42
DQ57
13
DQ42
43
DQ10
13
DQ26
43
DQ58
13
DQ42
43
DQ10
13
DQ26
43
DQ58
14
DQ43
44
DQ11
14
DQ27
44
DQ59
14
DQ43
44
DQ11
14
DQ27
44
DQ59
15
DQ44
45
DQ12
15
DQ28
45
DQ60
15
DQ44
45
DQ12
15
DQ28
45
DQ60
16
DQ45
46
DQ13
16
DQ29
46
DQ61
16
DQ45
46
DQ13
16
DQ29
46
DQ61
17
DQ46
47
DQ14
17
DQ30
47
DQ62
17
DQ46
47
DQ14
17
DQ30
47
DQ62
18
DQ47
48
DQ15
18
DQ31
48
DQ63
18
DQ47
48
DQ15
18
DQ31
48
DQ63
19
Vcc
49
Vss
19
Vss
49
Vcc
19
Vcc
49
Vss
19
Vss
49
Vcc
20
DQM4
50
DQM0
20
DQM2
50
DQM6
20
DQM4
50
DQM0
20
DQM2
50
DQM6
21
DQM5
51
DQM1
21
DQM3
51
DQM7
21
DQM5
51
DQM1
21
DQM3
51
DQM7
22
REGE
52
/WE
22
NC
52
A12
22
REGE
52
/WE
22
NC
52
A12
23
CKE0
53
CLK0
23
BA0
53
A11
23
CKE0
53
CLK0
23
BA0
53
A11
24
NC
54
CLK1
24
BA1
54
A9
24
NC
54
CLK1
24
BA1
54
A9
25
Vcc
55
Vss
25
A10
55
A8
25
Vcc
55
Vss
25
A10
55
A8
26
SDA
56
/CAS
26
A0
56
A7
26
SDA
56
/CAS
26
A0
56
A7
27
SCL
57
/RAS
27
A1
57
A6
27
SCL
57
/RAS
27
A1
57
A6
28
/CS1
58
/CS0
28
A2
58
A5
28
/CS3
58
/CS2
28
A2
58
A5
29
/CS3
59
/CS2
29
A3
59
A4
29
NC
59
NC
29
A3
59
A4
30
Vcc
60
Vss
30
Vss
60
Vcc
30
Vcc
60
Vss
30
Vss
60
Vcc
* Pin Names
A0~A12: Address input (Multiplexed)
DQ0~DQ63: Data input/output
BA0~BA1: Select bank
CLK0: Clock input
CKE0: Clock enable input
/CS0, /CS2: Chip select input
/RAS: Row address strobe
/WE: Write enable
/CAS: Coulmn address strobe
DQM0~7: DQM
REGE: Register enable
SDA: Serial data I/O
VSS: Ground
Vcc: Power supply(3.3V)
SCL: Serial clock
DU: Don’t use
NC: No connection
URL:www.hbe.co.kr
REV.1.0(August.2002).
-2-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
Functional Block Diagram
URL:www.hbe.co.kr
REV.1.0(August.2002).
-3-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
PIN FUNCTION DESCRIPTION
Pin
Name
Input Function
CLK
System clock
Active on the positive going edge to sample all inputs.
/CE
Chip enable
Disables or enables device operation by masking or enabling all inputs except
CLK, CKE and DQM
CKE
Clock enable
Masks system clock to freeze operation from the next clock cycle.
CKE should be enabled at least one cycle prior to new command.
Disable input buffers for power down in standby.
CKE should be enabled 1CLK+tss prior to valid command.
A0 ~ A12
Address
Row/column addresses are multiplexed on the same pins.
Row address : RA0 ~ RA12, Column address : CA0 ~ CA8
BA0 ~ BA1
Bank select address
Selects bank to be activated during row address latch time.
Selects bank for read/write during column address latch time.
/RAS
Row address strobe
Latches row addresses on the positive going edge of the CLK with /RAS low.
Enables row access & precharge.
/CAS
Column
address
strobe
/WE
Write
Latches column addresses on the positive going edge of the CLK with /CAS low.
Enables column access.
enable
Enables write operation and row precharge.
Latches data in starting from /CAS, /WE active.
DQM0 ~ 7
REGE
Data
input/output
Makes data output Hi-Z, tsHZ after the clock and masks the output.
mask
Blocks data input when DQM active. (Byte masking)
Register enable
The device operates in the transparent mode when REGE is low. When REGE is
high, the
device operates in the registered mode. In registered mode, the Address and
control inputs are latched if CLK is held at a high or low logic level. The inputs are
strobed in the latch/flip-flop on the riging edge of CLK. REGE is tied to VDD
through 10K ohm register on PCB. So if REGE of module is floating, this module
will be operated as registerd mode.
DQ0 ~ 63
Data input/output
Data inputs/outputs are multiplexed on the same pins.
Vcc/Vss
Power
Power and ground for the input buffers and the core logic.
supply/ground
URL:www.hbe.co.kr
REV.1.0(August.2002).
-4-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
VIN ,OUT
-1V to 4.6V
Voltage on Vcc Supply Relative to Vss
Vcc
-1V to 4.6V
Power Dissipation
PD
8W
TSTG
-55oC to 150oC
Voltage on Any Pin Relative to Vss
Storage Temperature
Short Circuit Output Current
IOS
50mA
Notes:
Permanent device damage may occur if " Absolute Maximum Ratings" are exceeded. Functional operation should be
restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
DC OPERATING CONDITIONS
(Recommended operating conditions (Voltage referenced to Vss = 0V, TA = 0 to 70°C) )
PARAMETER
SYMBOL
MIN
TYP.
MAX
UNIT
NOTE
Supply Voltage
Vcc
3.0
3.3
3.6
V
Input High Voltage
VIH
2.0
3.0
Vcc+0.3
V
1
Input Low Voltage
VIL
-0.3
0
0.8
V
2
Output High Voltage
VOH
2.4
-
-
V
IOH = -2mA
Output Low Voltage
VOL
-
-
0.4
V
IOL = 2mA
Input leakage current
I LI
-10
10
uA
Notes :
1. VIH (max) = 5.6V AC. The overshoot voltage duration is ≤ 3ns.
2. VIL (min) = -2.0V AC. The undershoot voltage duration is ≤ 3ns.
3. Any input 0V ≤ VIN ≤ VDDQ.
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with Tri-State outputs.
3
CAPACITANCE
(Vcc = 3.3V, TA = 23°C, f = 1MHz, VREF =1.4V ± 200 mV)
DESCRIPTION
SYMBOL
MIN
MAX
UNITS
Input capacitance(A0~A11)
CIN1
2.5
5.0
pF
Input capacitance(/RAS, /CAS,/WE)
CIN2
2.5
5.0
pF
Input capacitance(CKE0)
CIN3
2.5
5.0
pF
Input capacitance(CLK0)
CIN4
2.5
4.0
pF
Input capacitance(/CE0,CE3)
CIN5
2.5
5.0
pF
Input capacitance(DQM0~DQM7)
CIN3
2.5
5.0
pF
Input capacitance(BA0~BA1)
CIN3
2.5
5.0
pF
Data input/output capacitance (DQ0 ~ DQ63)
COUT
4.0
6.5
pF
URL:www.hbe.co.kr
REV.1.0(August.2002).
-5-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
DC CHARACTERISTICS
(Recommended operating condition unless otherwise noted, T A = 0 to 70°C)
TEST
PARAMETER
VERSION
NOT
SYMBOL
UNIT
CONDITION
-13
-10L
-10
960
880
880
E
Burst length = 1
Operating current
(One bank active)
ICC1
tRC ≥ tRC(min)
mA
1
8
mA
3
8
mA
3
mA
3
mA
3
mA
3
IO = 0mA
Precharge standby
ICC2P
current in power-down
mode
ICC2PS
CKE ≤ VIL(max)
tCC=10ns
CKE & CLK ≤ VIL(max)
tCC=∞
CKE ≥ VIH(min)
Precharge standby
ICC2N
/CE ≥ VIH(min),
tcc=10ns
160
Input signals are changed one
current in non power-
time during 20ns
down mode
CKE ≥ VIH(min)
ICC2NS
CLK ≤ VIL(max),
tcc=∞
56
Input signals are stable
Active standby current in
power-down mode
ICC3P
ICC3PS
CKE ≤ VIL(max), tcc=10ns
40
CKE&CLK ≤ VIL(max)
40
tcc=∞
CKE≥VIH(min),
Active standby current in
ICC3N
/CE≥VIH(min),
tcc=10ns
240
Input signals are changed one
non power-down mode
time during 20ns
(One bank active)
CKE≥VIH(min)
ICC3NS
CLK ≤VIL(max),
tcc=∞
160
Input signals are stable
IO = 0 mA
Operating current
(Burst mode)
Page burst
ICC4
1.2
1
1
A
1
1.76
1.68
1.68
A
2
mA
3
4Banks Activated
tCCD = 2CLKs
Refresh current
ICC5
tRC ≥ tRC(min)
CKE ≤ 0.2V
Self refresh current
ICC6
Notes:
1. Measured with outputs open.
2. Refresh period is 64ms.
3. Measured with 1PLL & 3 Drive Ics.
4. Unless otherwise noticed, input swing level is CMOS(V IH/VIL=VDDQ/VSSQ).
URL:www.hbe.co.kr
REV.1.0(August.2002).
-6-
12
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
AC OPERATING TEST CONDITIONS
(Vcc = 3.3V ± 0.3V, TA = 0 to 70°C)
PARAMETER
Value
UNIT
2.4/0.4
V
1.4
V
tr/tf = 1/1
ns
1.4
V
AC Input levels (Vih/Vil)
Input timing measurement reference level
Input rise and fall time
Output timing measurement reference level
Output load condition
See Fig. 2
+3.3V
1200Ω
Vtt=1.4V
DOUT
870Ω
50pF*
50Ω
vss
VOH (DC) = 2.4V, IOH = -2mA DOUT
VOL (DC) = 0.4V, IOL = 2mA
Z0=50Ω
50pF
(Fig. 1) DC output load circuit
(Fig. 2) AC output load circuit
OPERATING AC PARAMETER
(AC operating conditions unless otherwise noted)
VERSION
PARAMETER
SYMBOL
-13
-10L
-10
UNIT
NOTE
Row active to row active delay
tRRD(min)
15
20
20
ns
1
/RAS to /CAS delay
tRCD(min)
20
20
24
ns
1
Row precharge time
tRP(min)
20
20
24
ns
1
tRAS(min)
45
50
50
ns
1
Row active time
tRAS(max)
Row cycle time
tRC(min)
Last data in to row precharge
tRDL(min)
Last data in to Active delay
100
65
70
ns
ns
1
2
CLK
2,5
tDAL(min)
2 CLK + 20 ns
-
5
Last data in to new col. address delay
tCDL(min)
1
CLK
2
Last data in to burst stop
tBDL(min)
1
CLK
2
Col. address to col. address delay
tCCD(min)
1
CLK
3
ea
4
CAS latency=3
2
CAS latency=2
1
Number of valid output data
URL:www.hbe.co.kr
REV.1.0(August.2002).
-7-
80
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
Notes :
1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time and
then rounding off to the next higher integer.
2. Minimum delay is required to complete write.
3. All parts allow every cycle column address change.
4. In case of row precharge interrupt, auto precharge and read burst stop.
.5. For -1H/1L, tRDL=1CLK and tDAL=1CLK+20ns is also supported .
( recommend : tRDL=2CLK and tDAL=2CLK + 20ns.)
AC CHARACTERISTICS
(AC operating conditions unless otherwise noted)
-13
PARAMETER
-10L
-10
SYMBOL
Min
Max
Min
Max
Min
UNIT
NOTE
ns
1
ns
1,2
ns
2
Max
CAS
7.5
CLK cycle
latency=3
time
CAS
tCC
10
1000
10
1000
-
12
1000
13
latency=2
CLK to
CAS
valid
latency=3
output
CAS
delay
latency=2
5.4
6
7
tSAC
-
7
7
CAS
Output
2.7
3
3
latency=3
data
tOH
CAS
hold time
3
3
latency=2
CLK high pulse width
tCH
2.5
3
3.5
ns
3
CLK low pulse width
tCL
2.5
3
3.5
ns
3
Input setup time
tSS
1.5
2
2.5
ns
3
Input hold time
tSH
0.8
1
1.5
ns
3
CLK to output in Low-Z
tSLZ
1
1
1
ns
2
CAS
CLK to
5.4
6
7
ns
-
7
7
ns
latency=3
output
tSHZ
CAS
in Hi-Z
latency=2
Notes :
1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.
3. Assumed input rise and fall time (tr & tf) = 1ns.
If tr & tf is longer than 1ns, transient time compensation should be considered
i.e., [(tr + tf)/2-1]ns should be added to the parameter.
URL:www.hbe.co.kr
REV.1.0(August.2002).
-8-
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
SIMPLIFIED TRUTH TABLE
CKE
n-1
COMMAND
Register
Mode register set
Auto refresh
Refresh
Entry
Self
refres
Exit
h
Bank active & row addr.
Read &
column
address
Write &
column
address
Auto
/R
A
S
/C
A
S
/W
E
D
Q
M
X
L
L
L
L
X
OP code
L
L
L
H
X
X
L
H
H
H
H
X
X
X
X
X
H
L
BA
0,1
L
H
H
X
L
L
H
H
X
V
H
X
L
H
L
H
X
V
precharge
Auto
precharge
disable
Auto
precharge
H
H
X
L
H
L
H
Bank selection
e
All banks
Clock suspend or
active power down
power
down mode
X
X
H
X
Entry
H
L
Exit
L
H
Entry
H
L
Exit
L
H
DQM
H
No operation command
H
L
H
H
L
L
L
H
L
H
X
X
X
L
V
V
V
X
X
X
X
H
X
X
X
L
H
H
H
H
X
X
X
V
V
V
L
X
X
H
X
X
X
L
H
H
H
X
NOTE
1,2
3
3
3
3
Column
H
(A0 ~ A9)
4,5
L
Column
4
H
(A0 ~ A9)
Address
X
V
L
X
H
-9-
4,5
6
X
X
X
X
X
X
V
X
X
X
(V=Valid, X=Don't care, H=Logic high, L=Logic low)
Notes :
1. OP Code : Operand code
A0 ~ A11 & BA0 ~ BA1 : Program keys. (@ MRS)
2. MRS can be issued only at all banks precharge state.
A new command can be issued after 2 CLK cycles of MRS.
3. Auto refresh functions are as same as CBR refresh of DRAM.
The automatical precharge without row precharge command is meant by "Auto".
Auto/self refresh can be issued only at all banks precharge state.
4. BA0 ~ BA1 : Bank select addresses.
If both BA0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected.
If both BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank B is selected.
If both BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank C is selected.
If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected.
If A10/AP is "High" at row precharge, BA0 and BA1 is ignored and all banks are selected.
5. During burst read or write with auto precharge, new read/write command can not be issued.
Another bank read/write command can be issued after the end of burst.
New row active of the associated bank can be issued at t RP after the end of burst.
6. Burst stop command is valid at every burst length.
7. DQM sampled at positive going edge of a CLK and masks the data-in at the very CLK (Write DQM latency is 0),
but makes Hi-Z state the data-out of 2 CLK cycles after. (Read DQM latency is 2)
URL:www.hbe.co.kr
REV.1.0(August.2002).
4
Address
X
X
A11
A9~A0
Row address
V
L
enable
Precharg
A10/
AP
L
eable
Burst Stop
Precharge
H
/C
E
precharge
disable
Auto
H
CKE
n
HANBit Electronics Co.,Ltd
7
HANBit
HSD32M64F8R
TIMING DIAGRAMS
td, tr = Delay of register (74LVC162835)
Notes : 1. In case of module timing, command cycles 1CLK with respect to external input timing at the address and input
signal because of the buffering in register (74LVC162835). Therefore, Input/Output signals of read/write function
should be issued 1CLK earlier as compared to Unbuffered MODULE.
2. DIN is to be issued 1 clock after write command in external timing because D IN is issued directly to module.
URL:www.hbe.co.kr
REV.1.0(August.2002).
- 10 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 11 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 12 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 13 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 14 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 15 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 16 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 17 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 18 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 19 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 20 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 21 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 22 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 23 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 24 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 25 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 26 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 27 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 28 -
HANBit Electronics Co.,Ltd
HANBit
URL:www.hbe.co.kr
REV.1.0(August.2002).
HSD32M64F8R
- 29 -
HANBit Electronics Co.,Ltd
HANBit
HSD32M64F8R
PACKAGING INFORMATION
Unit : inch [mm]
TOLERANCE
:
±0.008 [ ±0.20 ]
Front – Side
Rear-Side
ORDERING INFORMATION
Part Number
Density
Org.
HSD32M64F8R-10
256MByte
32M x 64
HSD32M64F8R-10L
256MByte
32M x 64
HSD32M64F8R-13
256MByte
32M x 64
URL:www.hbe.co.kr
REV.1.0(August.2002).
Package
120PIN
STACKABLE
120PIN
STACKABLE
120PIN
STACKABLE
- 30 -
Ref.
Vcc
8K
3.3V
8K
3.3V
8K
3.3V
MODE
MAX.frq
100Mhz
CL=2
100Mhz
CL=3
133Mhz
CL=3
HANBit Electronics Co.,Ltd