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TMS370C322AFNL Datasheet(PDF) 9 Page - Texas Instruments

Part # TMS370C322AFNL
Description  8-BIT MICROCONTROLLER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TMS370C322AFNL Datasheet(HTML) 9 Page - Texas Instruments

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TMS370Cx2x
8-BIT MICROCONTROLLER
SPNS018C – FEBRUARY 1993 – REVISED FEBRUARY 1997
9
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
memory map (continued)
256-Byte RAM (Register File/Stack)
Reserved†
Peripheral File
Reserved†
256-Byte Data EEPROM
Not Available‡
8K-Byte
7FC0h
Trap 15–0
7FECh
Serial Communication Interface RX
7FEEh
Timer 1
7FF0h
Interrupt 3
7FF2h
Interrupt 2
7FF4h
Interrupt 1
7FF8h
Reset
1000h
Reserved†
1010h
System Control
1020h
Digital Port Control
1030h
1040h
Timer 1 Control
Vectors
7FDFh
7FEFh
7FF1h
7FF3h
7FF5h
7FF7h
7FF9h
100Fh
101Fh
102Fh
103Fh
104Fh
Program Memory
(ROM/EPROM)
Not Available‡
SPI Control
Reserved†
Reserved†
Serial Communication Interface TX
7FFAh
7FFBh
7FFCh
7FFDh
7FFEh
7FFFh
1050h
1060h
105Fh
10FFh
0000h
0100h
00FFh
1000h
10FFh
1100h
1EFFh
1F00h
1FFFh
2000h
5FFFh
6000h
6FFFh
7000h
7FFFh
8000h
FFFFh
0FFFh
Reserved†
SCI1 Control
7FEDh
7FF6h
Serial Peripheral Interface
† Reserved means the address space is reserved for future expansion.
‡ Not available means the address space is not accessible.
Figure 3. TMS370Cx2x Memory Map
RAM / register file (RF)
Locations within the RAM address space can serve as the RF, general-purpose read / write memory, program
memory, or stack instructions. The TMS370Cx2x contains 256 bytes of internal RAM mapped beginning at
location 0000h (R0) and continuing through location 00FFh (R255).
The first two registers, R0 and R1, are also called register A and B, respectively. Some instructions implicitly
use register A or B; for example, the instruction LDSP (load SP) assumes that the value to be loaded into the
stack pointer is contained in register B. Registers A and B are the only registers cleared on reset.
peripheral file (PF)
The TMS370Cx2x control registers contain all the registers necessary to operate the system and peripheral
modules on the device. The instruction set includes some instructions that access the PF directly. These
instructions designate the register by the number of the PF relative to 1000h, preceded by P0 for a hexadecimal
designator or P for a decimal designator. For example, the system-control register 0 (SCCR0) is located at
address 1010h; its peripheral file hexadecimal designator is P010, and its decimal designator is P16. Table 4
shows the TMS370Cx2x PF address map.


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