CP80S54E ETC2 [List of Unclassifed Manufacturers], CP80S54E Datasheet - Page 4

• Manufacturer Part Number: CP80S54E
• Description: EPROM/ROM-Based 8-Bit Microcontroller Series
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

1.0 MEMORY ORGANIZATION
CP80S54/S56 memory is organized into program memory and data memory.
1.1 Program Memory Organization
The CP80S54/S54E have a 9-bit Program Counter (PC) capable of addressing a 512×13 program memory space.
The CP80S56/S56E have a 10-bit Program Counter capable of addressing a 1K×13 program memory space.
The RESET vector for the CP80S54/S54E is at 1FFh. The RESET vector for the CP80S56/S56E is at 3FFh.
The H/W interrupt vector is at 008h. And the S/W interrupt vector is at 002h.
CP80S54/S56 supports all ROM/EPROM area CALL/GOTO instructions without page.
FIGURE 1.1: Program Memory Map and STACK
1FFh
008h H/W Interrupt Vector
002h S/W Interrupt Vector
000h
:
:
CP80S54/S54E
Reset Vector
PC<8:0>
Stack 1
Stack 2
Stack 3
Stack 4
Stack 5
3FFh
008h H/W Interrupt Vector
002h S/W Interrupt Vector
000h
:
:
CP80S56/S56E
Reset Vector
PC<9:0>
Stack 1
Stack 2
Stack 3
Stack 4
Stack 5
CP80S54/56
Rev0.1 Nov 30, 2005
P.4/CP80S54/S56