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PDF M6636B Data sheet ( Hoja de datos )
| Número de pieza | M6636B | |
| Descripción | MSM6636B | |
| Fabricantes | OKI electronic | |
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E2E1035-27-Y2
www.DataSheet4U.com
¡¡SemicondSucetormiconductor
MSM6636B
This version:MJSanM. 61699386B
Previous version: Nov. 1996
SAE-J1850 Multiplex Communication Protocol Conformity Transmission Controller for
Automotive LAN
GENERAL DESCRIPTION
The MSM6636B is a transmission controller for automotive LAN based on data communication
protocol SAE-J1850. This device can realize a data bus topology bus LAN system with a PWM
bit encoding method (41.6 kbps). In addition to a protocol control circuit, MSM6636B has an
enclosed quartz oscillation circuit, host CPU interface (parallel interface), a transmit/receive
buffer, and a bus receiver circuit that decreases the burden on the host CPU.
FEATURES
• Based on SAE-J1850 CLASS B DATA COMMUNICATION NETWORK INTERFACE (issued
August 12, 1991)
• Non-destructive collision and priority control using CSMA/CD
• Internal transmit buffer (1 frame) and receive buffer (2 frames)
• Modulating/demodulating: PWM (Pulse Width Modulation)
• Transmission speed: 41.6 kbps
• Multi-address setting with physical addressing: 1 type / functional addressing: 15 types
• Address filter function by multi-addressing (broadcasting possible)
• Automatic retransmission function by arbitration loss and non ACK
• Three types of in-frame response support:
q Single-byte response from a single node
w Multi-byte response from a single node (with CRC code)
e Single-byte response from multiple nodes (ID response as ACK)
• Error detection by cyclic redundancy check (CRC)
• Various communication error detections
• Dual-wire bus abnormality detection by internal bus receiver and fault tolerance function
• Host CPU interface is accessed in parallel
• Sleep function
Low current consumption mode by oscillation stop (IDS Max < 50µA)
SLEEP / WAKE UP control from host CPU, WAKE UP via LAN bus
• Package: 24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name : MSM6636BGS-K)
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RECOMMENDED OPERATING CONDITIONS
Parameter
Power Supply Voltage
Operating Frequency
Ambient Temperature
Symbol
DVDD, AVDD
fOSC
Ta
Condition
AVDD=DVDD
DVDD=AVDD=5V±10%
—
MSM6636B
Range
4.5 to 5.5
2 to 16
–40 to +85
DGND=AGND=0V
Unit
V
MHz
°C
ELECTRICAL CHARACTERISTICS
DC Characteristics
Parameter
"H" Input Voltage
"L" Input Voltage
"H" Input Voltage
"L" Input Voltage
"H" Input Voltage
"L" Input Voltage
Receiver Hysteresis Width
"H" Input Current
"L" Input Current
"H" Input Current
"L" Input Current
"H" Input Current
"L" Input Current
"H" Output Voltage
"L" Output Voltage
"H" Output Voltage
"L" Output Voltage
GND Offset Voltage
Current Consumption 1
Current Consumption 2
Symbol
VIH1
VIL1
VIH2
VIL2
VIH3
VIL3
VH
IIH1
IIL1
IIH2
IIL2
IIH3
IIL3
VOH1
VOL1
VOH2
VOL2
VOFF
IDS
IDD
DVDD=AVDD=5V±10%, DGND=AGND=0V, Ta=–40 to +85°C
Condition
Applied pin
(see below
for A-E)
Min.
Typ. Max. Unit
— A DVDD ¥ 0.8 — DVDD+0.3 V
— A DGND–0.3 — DVDD ¥ 0.2 V
— E DVDD ¥ 0.7 — DVDD+1.0 V
— E DGND–1.0 — DGND ¥ 0.3 V
— B 2.4 — DVDD+0.3 V
— B –0.3 — 0.8 V
— E 100 — 400 mV
VI=VDD
VI=0V
VI=VDD
VI=0V
VI=VDD
VI=0V
B
B
RES
RES
BI (+)
BI (–)
— — +1 mA
— — –1 mA
— — +1 mA
— — –100 mA
— — +100 mA
— — –100 mA
IO=–400µA
IO=+3.2mA
C, AD0–7 DVDD–0.4 —
—
V
C, AD0–7 — — DGND+0.4 V
IO=–4.0mA
IO=+4.0mA
—
D
DVDD–0.4 —
—
V
D — — DGND+0.4 V
— — — ±1 V
During sleep
—
— *1 50 mA
f=16MHz,
no load
—
— — 10 mA
A: RES, CS
B: ALE, WR, RD, AD0-7
C: INT
D: BO–, BO+
E: BI–, BI+
*1 Typ.=0.2mA when VDD=5V, f=16 MHz, Ta=25°C
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MSM6636B
• Fault tolerant function operation conditions
DVDD=AVDD=5V±10%, Ta=–40 to +85°C, In setting 41.6 kbps
Parameter
Symbol Min.
Typ.
Max. Unit
LAN bus (+) GND Short Circuit Detection Pulse Width
tPG
5 — — ms
LAN bus (+) VDD Short Circuit Detection Pulse Width
tPV
48 — — ms
LAN bus (–) GND Short Circuit Detection Pulse Width
tNG
48 — — ms
LAN bus (–) VDD Short Circuit Detection Pulse Width
tNV
5 — — ms
BUS(+)
BUS(–)
BUS(+)
BUS(–)
tPG
tNV
tPV
tNG
• Reset input pulse width
Parameter
Reset Input Pulse Width
Symbol
tRES
DVDD=AVDD=5V±10%, Ta=–40 to +85°C
Min.
Typ. Max. Unit
0.1 — — ms
RES
tRES
Note:
The oscillation stable time after power ON is determined by the crystal used and the
parasitic capacitance generated by connection.
Make tRES greater than or equal to the oscillation stable time.
In the table above, the reset input pulse width indicates the minimum pulse width when
oscillation is stable after power is turned on.
11/13
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| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet M6636B.PDF ] | |
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