tmp86c809ng TOSHIBA Semiconductor CORPORATION, tmp86c809ng Datasheet - Page 17

• Manufacturer Part Number: tmp86c809ng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

2. Operational Description
2.1 CPU Core Functions
2.1.1 Memory Address Map
2.1.2 Program Memory (MaskROM)
2.1.3 Data Memory (RAM)
The CPU core consists of a CPU, a system clock controller, and an interrupt controller.
This section provides a description of the CPU core, the program memory, the data memory, and the reset circuit.
all mapped in 64-Kbyte address space. Figure 2-1 shows the
to 00FFH) of the internal RAM are located in the direct area; instructions with shorten operations are available
against such an area.
should be initialized by an initialization routine.
The TMP86C809NG memory is composed MaskROM, RAM and SFR(Special function register). They are
The TMP86C809NG has a 8192 bytes (Address E000H to FFFFH) of program memory (MaskROM ).
The TMP86C809NG has 512bytes (Address 0040H to 023FH) of internal RAM. The first 192 bytes (0040H
The data memory contents become unstable when the power supply is turned on; therefore, the data memory
MaskROM
RAM
SFR
FFC0
FFDF
FFE0
FFFF
E000
003F
023F
0000
0040
H
H
H
H
H
H
H
H
H
Figure 2-1 Memory Address Map
64 bytes
bytes
bytes
8192
512
Page 7
Vector table for vector call instructions
(32 bytes)
Vector table for interrupts
(32 bytes)
MaskROM:
RAM:
SFR:
TMP86C809NG
Special function register includes:
I/O ports
Peripheral control registers
Peripheral status registers
System control registers
Program status word
Random access memory includes:
Data memory
Stack
Program memory
memory address map.
TMP86C809NG