FUJITSU SEMICONDUCTOR
DATA SHEET
DS07-12536-5E
8-bit Proprietary Microcontroller
CMOS
F MC-8L MB89940 Series
MB89943/945/P945/PV940
s
DESCRIPTION
The MB89940 series is specially designed for automotive instrumentation applications. It features a combination
of two PWM pulse generators and four high-drive-current outputs for controlling a stepping motor. It also contains
two analog inputs, two PWM pulse generators and 10-digit LCD controller/driver for various sensor/indicator
devices. The MB89940 series is manufactured with high performance CMOS technologies and packaged in a
48-pin QFP
.
2
s
FEATURES
•
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8-bit core CPU: 4 MHz system clock (8 MHz external, 500 ns instruction cycle)
21-bit timebase timer
Watchdog timer
Clock generator/controller
16-bit interval timer
Two PWM pulse generators with four high-drive-current outputs
Two-channel 8-bit A/D converter
Three external interrupt
Low supply voltage reset
External voltage monitor interrupt
Two more PWM pulse generators for controlling indicator devices
4-common 17-segment LCD driver/controller
Package: 48-pin plastic QFP 48-pin ceramic MQFP
,
5.0 V single power supply (V
PP
required for MB89P945)
On-chip voltage regulator for internal 3.0 V power supply (MB89943, MB89945)
s
PACKAGES
48-pin Plastic QFP
48-pin Ceramic MQFP
(FPT-48P-M16)
(MQP-48C-P01)
MB89940 Series
s
PRODUCT LINEUP
Part number
Item
Classification
ROM size
RAM size
CPU functions
MB89943
MB89945
MB89P945
One-time PROM
16 K
×
8 bits
(internal ROM)
MB89PV940
Piggyback
32 K
×
8 bits
(external on piggyback)
1 K
×
8 bits
Mass-produced products
(mask ROM products)
8 K
×
8 bits
16 K
×
8 bits
(internal mask ROM) (internal mask ROM)
512
×
8 bits
The number of instructions: 136
Instruction cycle:
0.5
µs*
1
@8 MHz
Interrupt response time:
4.0
µs*
1
@8 MHz
Multiply instruction time:
19 instruction cycles
Divide instruction time:
21 instruction cycles
Direct addressing memory-to/from-register data transfer:
7 instruction cycles
Output:
Input/Output:
5-bit N-ch open-drain
Two 8-bit CMOS schmitt I/Os and 8-bit CMOS I/Os
Ports
Timebase timer
8-bit/16-bit timer
Watchdog Reset
Stepping motor
controller
8-bit PWM timers
External interrupt
A/D converter
21 bits
Interrupt interval: 1 ms, 4.1 ms, 32.8 ms or 524.3 ms
Can be used as two 8-bit timers or one 16-bit timer
Operation clock: 1
µs,
16
µs,
256
µs
or external *
1
Reset interval: Approx. 524 ms to 1049 ms
Two 8-bit PWM pulse generators
Synchronized 4-channel high current output
Operation clock: 250 ns, 500 ns, 1
µs
or 4
µs*
1
Two 8-bit PWM timers
3 channels, selective positive edge or negative edge trigger
8-bit resolution, two-channel input
A/D conversion time : (MB89943/945 : 26
µs*
1
/8 MHz oscillation,
MB89P945/MB89PV940 : 22
µs*
1
/8MHz oscillation)
4-common and 17-segment outputs
Number of outputs programmable
Autonomous reset when low supply voltage
Reset voltage: 3.3 V, 3.6 V, 4.0 V
Interrupts when voltage at external pin is lower than the reference voltage
Stop mode and sleep mode
3.5 V to 5.5 V
CMOS
MBM27C256A-20TVM
LCD controller
Low supply voltage
reset
External voltage
monitor interrupt
Standby modes
Operating
voltage*
2
Process
External EPROM
*1: Execution times and clock cycle times are dependent on the use of MCU.
*2: Varies with conditions such as the operating frequency. (See section “s Electrical Characteristics.”) In the case
of the MB89PV940, the voltage varies with the restrictions of the EPROM for use.
2
MB89940 Series
s
PACKAGE AND CORRESPONDING PRODUCTS
Package
FPT-48P-M16
MQP-48C-P01
: Available
×:
Not available
×
MB89943
MB89945
MB89P945
MB89PV940
×
Note: For more information about each package, see section “s Package Dimensions.”
s
DIFFERENCES AMONG PRODUCTS
1. Memory Size
Prior to evaluating/developing the software for the MB89940 series, please check the differences between the
product types.
• RAM/ROM configurations are dependent on the product type.
• If the bottom address of the stack is set to the upper limit of the RAM address, it should be relocated when
changing the product type.
2. Power Dissipation
• For the piggyback product, add the power dissipation of the EEPROM on the piggyback.
• The power dissipation differs between the product types.
3. Technology
The mask ROM product is fabricated with a 0.5
µm
CMOS technology whereas the other products with 0.8
µm
CMOS technology.
Also the mask ROM product contains the on-chip voltage regulator for the internal 3.0 power supply. For details,
refer to
MB89940 Series Hardware Manual.
4. Mask Option
Functions that can be selected as options and how to designate these options vary by the product.
Before using options check section “s Mask Options.”
• No options are available for the piggyback product.
• The power-on reset and reset output options are always activated with the mask ROM product.
• Pull-up option must not be specified with the pins used as LCD outputs.
3
MB89940 Series
s
PIN ASSIGNMENT
(Top view)
MODE
VINT
P40/PW
P37/FUELI
P36/TEMPI
AV
SS
DV
SS
P35/PWM2M
P34/PWM2P
P33/PWM1M
P32/PWM1P
P31/TEMPO
AV
CC
RST
P41/COM0
P42/COM1
X0
X1
V
CC
P43/COM2
P44/COM3
P27/INT2
P26/INT1
P25/INT0
1
2
3
4
5
6
7
8
9
10
11
12
48
47
46
45
44
43
42
41
40
39
38
37
P24/V3
P23/TO/V2
P22/EC/V1
P21/V0
P20/SEG16
P17/SEG15
V
SS
P16/SEG14
P15/SEG13
P14/SEG12
P13/SEG11
P12/SEG10
13
14
15
16
17
18
19
20
21
22
23
24
36
35
34
33
32
31
30
29
28
27
26
25
DV
CC
P30/FUELO
P00/SEG00
P01/SEG01
P02/SEG02
P03/SEG03
P04/SEG04
P05/SEG05
P06/SEG06
P07/SEG07
P10/SEG08
P11/SEG09
(FPT-48P-M16)
(Continued)
4
MB89940 Series
(Continued)
(Top view)
MODE
VINT
P40/PW
P37/FUELI
P36/TEMPI
AV
SS
DV
SS
P35/PWM2M
P34/PWM2P
P33/PWM1M
P32/PWM1P
P31/TEMPO
AV
CC
RST
P41/COM0
P42/COM1
X0
X1
V
CC
P43/COM2
P44/COM3
P27/INT2
P26/INT1
P25/INT0
1
2
3
4
5
6
7
8
9
10
11
12
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
69
70
71
72
73
74
75
76
77
78
79
80
49
50
51
52
60
59
58
57
56
55
54
53
• Pin assignment on package top (MB89PV940 only)
Pin no.
49
50
51
52
53
54
55
56
Pin name
A15
A12
A7
A6
A5
A4
A3
N.C.
Pin no.
57
58
59
60
61
62
63
64
Pin name
N.C.
A2
A1
A0
O1
O2
O3
V
SS
Pin no.
65
66
67
68
69
70
71
72
Pin name
O4
O5
O6
O7
O8
CE
A10
N.C.
Pin no.
73
74
75
76
77
78
79
80
Pin name
OE
N.C.
A11
A9
A8
A13
A14
V
CC
N.C.: Internally connected. Do not use.
5
P24/V3
P23/TO/V2
P22/EC/V1
P21/V0
P20/SEG16
P17/SEG15
V
SS
P16/SEG14
P15/SEG13
P14/SEG12
P13/SEG11
P12/SEG10
13
14
15
16
17
18
19
20
21
22
23
24
DV
CC
P30/FUELO
P00/SEG00
P01/SEG01
P02/SEG02
P03/SEG03
P04/SEG04
P05/SEG05
P06/SEG06
P07/SEG07
P10/SEG08
P11/SEG09
(MQP-48C-P01)
68
67
66
65
64
63
62
61
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