NJU3552
- 1 -
4-BIT SINGLE CHIP OTP MICRO CONTROLLER
s
GENERAL DESCRIPTION
The NJU3552 is the C-MOS 4-bit Single Chip OTP type
Micro Controller with programmable Flash Memory.
It is completely compatible with the NJU3502 in function
and the pin configuration. Therefore, the NJU3552 is
suitable for the final evaluation before NJU3502 mask
generation, the small quantity production and short lead-
time.
*
In this data sheet, only OTP programming and the
difference between NJU3552 and NJU3502 are
mentioned mainly.
Therefore the detail function and specification should
be referred on the NJU3502 data sheet.
s
FEATURES
q
Internal One Time Programmable ROM 1,024 X 8bits
q
Internal Data RAM
64 X 4bits
q
Wide operating voltage range
2.7V ~ 5.5V
q
Package outline
SDIP24 / DMP24
q
ROM programmer "SUPERPRO/L" by XELTEK co,.
s
PIN CONFIGURATION IN OTP PROGRAMMING MODE
Note) The pin configuration in Normal operating mode is the same as NJU3502.
s
PACKAGE OUTLINE
PRELIMINARY
NJU3552L NJU3552M
RESET
D6
Open
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
D0
D1
D2
PROM
CLK
REQ
V
SS
Open
D3
Open
D7
Open
CNT2
CNT1
V
DD
D5
D4
Open
NJU3552
- 2 -
s
BLOCK DIAGRAM
Inter
r
upt Log
i
c
Y
'
Reg
X'
R
e
g
RA
M
64 x
4 bi
t
AC
Y
Reg
X
Reg
AL
U
IN
T
2
IN
T
3
IN
T
1
EX
TI
/
PE0
S
D
O/P
F
0
S
D
I
(
O)/P
F
1
SCK/
CKO
U
T
CP
U CORE
OS
C
ST
AN
D
B
Y
CONT
ROLLE
R
CP
U
TIM
I
N
G
GE
NE
RA
T
O
R
PR
ESC
A
L
E
R
PO
R
T
_
A
PA0
PA1
PA2
PA3
PO
R
T
_
C
PC0
PC1
PC2
PC3
OS
C1
OS
C2
V
DD
V
SS
TEST
RESET
MU
X
PC
ST
AC
K
TLU addr
I D
I R
OTP
ROM
1024 x
8 bi
t
TIM
E
R
SIO
PO
R
T
_
D
PD0
PD1
*
1
*
3
*
1
*
3
*
1
*
3
NJU3552
PO
R
T
_
B
PB0
PB1
PB2
PB3
*
1
*
2
*
1
r
e
fe
r
[
I
N
P
U
T O
U
TP
U
T
TE
R
M
I
N
A
L
TY
P
E
]
*
2 Input / O
u
tput dir
e
c
t
ion of
4-
bit gr
oup is
c
hanged by
the pr
ogr
am
.
*
3 Input / O
u
tput dir
e
c
t
ion of
eac
h bit is
s
e
lec
t
ed by
m
a
s
k
option.
NJU3552
- 3 -
s
TERMINAL DESCRIPTION IN OTP PROGRAMMING MODE
No.
SYMBOL
INPUT/OUTPUT
F U N C T I O N
13 RESET INPUT
RESET terminal.
When the low-level input-signal, the system is initialized.
2 - 4,
7,
15 - 17,
21
D0 - D7
INPUT/OUTPUT Data bus
22, CNT1 INPUT
23 CNT2 INPUT
OTP control input terminal
11
REQ
OUTPUT
Request output terminal
10
CLK
INPUT
Clock input terminal
9
PROM
INPUT
OTP programming enable terminal
24 V
DD
-
Power Source (5V)
12 V
SS
-
Power Source (0V)
Note 1)
Use at V
DD
=5V in OTP programming mode.
2)
Non connect anything to the other terminals.
s
Difference between NJU3552 (OTP version) and NJU3502 (MASK version)
q
Operating mode
NJU3552 has two operating modes. One is "Normal operating mode" and the other is "OTP programming
mode".
Normal operating mode
The "TEST" terminal is set to low level. (The terminal is recommended to connect to GND.)
Operating voltage range; 2.7V ~ 5.5V.
OTP Programming mode
User program is read out from or written into the OTP by the universal programmer "SUPERPRO/L" and
converting adapter made by XELTEK co,.(USA).
q
Option information set in the initialization
When the initialization is performed(RESET terminal is "L"), the operation information stored in option area is
set as shown in the following timing chart . The option information is set in the term of 1 / f
OSC
x 256clock after
RESET releasing and oscillation stability time. After information set, the program counter is set to 0000H and
the NJU3552 operates in normal.
[ TIMING CHART ]
Option information setting
1/f
OSC
x256clock
Oscillator
Clock
RESET
Normal
Operation
Oscillation
Stability
Time
Oscillation
Start
PC=0000H
f
OSC
=4MHz
about 64
sec
NJU3552
- 4 -
s
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage
V
DD
-0.3 ~ +7.0
V
Input Voltage
V
IN
-0.3 ~ V
DD
+ 0.3
V
Output Voltage
V
OUT
-0.3 ~ V
DD
+ 0.3
V
Operating Temperature
T
opr
-20 ~ +75
C
Storage Temperature
T
stg
-55 ~ +125
C
Note)
The difference of electrical characteristics between NJU3552 (OTP version) and NJU3502
(MASK version)
NJU3502
NJU3552
Supply Voltage (V
DD
) MIN.
2.4V
2.7V
Supply Current
5V (I
DD1
) Max.
4.0mA
30mA
(I
DD2
) Max.
4.0mA
30mA
(I
DD3
) Max.
3.8mA
30mA
(I
DD4
) Max.
4.0
A
20
A
3V (I
DD1
) Max.
2.0mA
20mA
(I
DD2
) Max.
2.0mA
20mA
(I
DD3
) Max.
1.8mA
20mA
(I
DD4
) Max.
2.0
A
20
A
NJU3552
- 5 -
s
ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS 1
(V
DD
=3.6~5.5V, V
SS
=0V, Ta=-20~75
C)
PARAMETER
SYM
BOL
C O N D I T I O N S
MIN
TYP
MAX
UNIT NOTE
Supply Voltage
V
DD
V
DD
3.6 5.5
V
I
DD1
V
DD
V
DD
=5V, f
OSC
=2MHz
X'tal Oscillation in Reset
30
mA
*3
I
DD2
V
DD
V
DD
=5V, f
OSC
=2MHz
Ceramic Oscillation in Reset
30
mA
*3
I
DD3
V
DD
V
DD
=5V, f
OSC
=2MHz
CR Oscillation in Reset
30
mA
*3
I
DD4
V
DD
V
DD
=5V, STANDBY Mode
20
A
*3
Supply Current
I
DD5
V
DD
V
DD
=5V, f
OSC
=4MHz, Operating
30
mA
*3
V
IH1
PA0~PA3, PB0~PB3, PC0~PC3,
SDI(O)/PF1, SCK/CKOUT
0.7V
DD
V
DD
V *1
V
IH2
PD0, PD1, EXTI/PE0, RESET
0.8V
DD
V
DD
V *1
High-Level
Input Voltage
V
IH3
OSC1
V
DD
-1.0 V
DD
V
V
IL1
PA0~PA3, PB0~PB3, PC0~PC3,
SDI(O)/PF1, SCK/CKOUT
0
0.3V
DD
V *1
V
IL2
PD0, PD1, EXTI/PE0, RESET
0
0.2V
DD
V *1
Low-level
Input Voltage
V
IL3
OSC1
0
1.0
V
High-Level
Input Current
I
IH
V
DD
=5.5V, V
IN
=5.5V
PA0~PA3, PB0~PB3, PC0~PC3,
PD0, PD1, EXTI/PE0, SDI(O)/PF1,
RESET, SCK/CKOUT
10
A
*1
I
IL1
V
DD
=5.5V, V
IN
=0V
Without pull-up resistance
PA0~PA3, PB0~PB3, PC0~PC3,
PD0, PD1, EXTI/PE0, SDI(O)/PF1,
RESET
-10
A
*1
Low-Level
Input Current
I
IL2
V
DD
=5.5V, V
IN
=0V
With pull-up resistance
PA0~PA3, PB0~PB3, PC0~PC3,
PD0, PD1, EXTI/PE0, SDI(O)/PF1,
SCK/CKOUT
-100
A
*1
High-Level
Output Voltage
V
OH
I
OH
=-100
A
PA0~PA3, PC0~PC3, PD0, PD1,
SDO/PF0, SDI(O)/PF1, SCK/CKOUT
V
DD
-0.5
V
*2
V
OL1
I
OL1
=400
A
PA0~PA3, PC0~PC3, PD0, PD1,
SDO/PF0, SDI(O)/PF1, SCK/CKOUT
0.5
V
*2
Low-Level
Output Voltage
V
OL2
I
OL2
=15mA
PB0~PB3
2.0
V
*2
Output
Leakage
Current
I
OD
V
DD
=5.5V, V
OH
=5.5V
PB0~PB3
10
A
*2
Input Capacitance
C
IN
Except V
DD
, V
SS
terminals
f
OSC
=1MHz
Other terminals : 0V
10
20
pF
*1 Input/output port is set as an Input terminal.
*2 Input/output port is set as an Output terminal.
*3 Except the current through Pull-up resister.
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