TOIM4232-TR3 Vishay, TOIM4232-TR3 Datasheet - Page 5

• Manufacturer Part Number: TOIM4232-TR3
• Description: IC SIR ENDEC IRDA 115.2K 16-SOIC
• Manufacturer: Vishay
• Type: Infrared Encoder/Decoderr

Specifications of TOIM4232-TR3

• Voltage - Supply, Analog: 2.7 V ~ 3.6 V
• Voltage - Supply, Digital: 2.7 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Data Transmission Rate: 2.4 Kbits/s to 115.2 Kbits/s
• Mounting Style: SMD/SMT
• Operating Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Ic Function: SIR Endec For IrDA Application
• Brief Features: Pulse Shaping Function, Programmable Baud Clock Generator, Low Operating Current
• Supply Voltage Range: 2.7V To 3.6V
• Operating Temperature (min): -25C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Package Type: SOIC
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 751-1200-2

SOFTWARE FOR THE TOIM4232
UART PROGRAMMING
For proper operation, the RS232 must be programmed (using 8 bit, 1 stop, no parity) to send a two character control word, YZ.
The control word YZ is composed of two characters, written in hexadecimal, in format: YZ. The transfer rate for programming
must be identical with the formerly programmed data rate, or after resetting the TOIM4232, the default rate of 9600 bit/s is used.
Note
(1)
RECOMMENDED APPLICATION CIRCUIT WITH LEVEL SHIFTER
Document Number: 82546
Rev. 2.1, 17-Nov-10
For programming the UART, refer to e.g., National Semiconductor’s data sheet of PC 16550 UART
STEP.
CON9
1
2
3
4
5
J1
1
6
2
7
3
8
4
9
5
External input
RXD
TXD
3.6 V max.
C3
C4
V CC
RTS (BR/D)
DTR (RESET)
+
+
RESET
CON2
11
10
12
J2
1
3
4
5
9
High
1
2
Low
Low
Low
Low
MAX3232CSE
C1+
C1-
C2+
C2-
T1IN
T2IN
R1OUT
R2OUT
U1
[e-mail], [e-mail],
C1
BR/D
High
High
Low
For technical questions within your region, please contact one of the following:
T1OUT
T2OUT
X
X
R2IN
GND
R1IN
V
CC
+ C2
V+
V-
16
2
6
15
14
7
13
8
+
C6
3/16 bit length
YZ with Y = 1
+ C5
R1
for 1.627 µs
TD_UART
SIR Endec for IrDA
Y = 0
Data
+ C7
X
X
X
Integrated Interface Circuit
Z2
C8
RD_UART
R2
Y1
Data
X
X
X
X
1
2
3
4
5
6
7
8
C9
RESET
BR/D
RD_232
TD_232
V
X1
X2
GND
TOIM4232
TOIM5232
CC_SD
®
U2
Applications
RD_IR
Data
X
X
X
X
RD_LED
TD_LED
RD_IR
TD_IR
V
CC
NC
S2
S1
16
15
14
13
12
11
10
9
[e-mail]
TD_IR
Data
X
X
X
X
Vishay Semiconductors
C10
C11
Wait at least 7 µs. TOIM4232 now is set
With BR/D = 0, TOIM4232 is in the data
and BR/D must be kept low (“0”) during
data transmission. Reprogramming to a
also must set to the correct data rate
to the control word programming mode
Examples: send “1Z” if 1.627 µs pulses
restarting from step 3. The UART itself
Resets all internal registers. Resets to
Wait at least 2 ms, to allow start-up of
internal clock. When external clock is
send “0Z” for 3/16 bit period pulses.
communication mode. Both RESET
are intended to be used. Otherwise
DESCRIPTION AND COMMENTS
“Y6” keeps the 9.6 kbit/s data rate.
IrDA default data rate of 9600 bit/s
+
new data rate can be resumed by
Wait at least 1 µs for hold-time.
Z = 0 sets to 115.2 kbit/s, see
Sending the control word YZ.
R3
This line not used with TFDU4101
used: wait at least 7 µs.
programming table.
2
4
6
8
TFDU4101
TFDU4300
IRED
Cathode
RXD
V
GND
CC1
TFDU4101: NC
TFDU4300: V
U4
TOIM4232
20612
Anode
IRED
TXD
SD
log
www.vishay.com
1
3
5
7
R4
optional
(1)
.
5