T48C862M-R4-TNQ Atmel, T48C862M-R4-TNQ Datasheet - Page 16

• Manufacturer Part Number: T48C862M-R4-TNQ
• Description: IC MON TIRE PRESS 433MHZ 24-SOIC
• Manufacturer: Atmel

Specifications of T48C862M-R4-TNQ

• Frequency: 433MHz
• Modulation Or Protocol: FM, FSK
• Data Rate - Maximum: 32 kBaud
• Power - Output: 10dBm
• Current - Transmitting: 9.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Memory Size: 1KB EEPROM, 1KB RAM
• Voltage - Supply: 2 V ~ 4 V
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 24-SOIC (0.200", 5.30mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Applications: -

Registers
Program Counter (PC)
16
T48C862-R4 [Preliminary]
Figure 11. RAM Map
The microcontroller has seven programmable registers and one condition code register
(see Figure 12).
The program counter is a 12-bit register which contains the address of the next instruc-
tion to be fetched from the EEPROM. Instructions currently being executed are decoded
in the instruction decoder to determine the internal micro-operations. For linear code (no
calls or branches), the program counter is incremented with every instruction cycle. If a
branch-, call-, return-instruction or an interrupt is executed, the program counter is
loaded with a new address. The program counter is also used with the table instruction
to fetch 8-bit wide EEPROM constants.
Figure 12. Programming Mode l
PC
SP
RP
Y
X
11
FCh
04h
00h
X
Y
RP
SP
Autosleep
TOS-1
(256 x 4-bit)
7
7
7
7
RAM
TOS
CCR
FFh
07h
03h
C
3
3
Expression
stack
Return
stack
--
Global
variables
Global
variables
v
B
0
I
0
0
0
0
0
0
0
0
Interrupt enable
Branch
Reserved
Carry / borrow
Program counter
Return stack pointer
Expression stack pointer
RAM address register (X)
RAM address register (Y)
Top of stack register
Condition code register
Expression stack
11
Return stack
3
TOS-1
TOS-2
4-bit
TOS
12-bit
0
4551C–4BMCU–01/04
SP
0
RP