參數(shù)資料
型號: S1C63455F
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP128
封裝: PLASTIC, QFP5-128
文件頁數(shù): 34/119頁
文件大小: 865K
代理商: S1C63455F
S1C63455 TECHNICAL MANUAL
EPSON
13
CHAPTER 3: CPU, ROM, RAM
(3) Subroutine calls use 4 words (for PC evacuation) in the stack area for 16-bit data (SP1). Interrupts use
4 words (for PC evacuation) in the stack area for 16-bit data (SP1) and 1 word (for F register evacua-
tion) in the stack area for 4-bit data.
0000H
00FFH
0100H
01FFH
0200H
03FFH
4 bits
4-bit access area
(SP2 stack area)
4-bit access area
(Data area)
4/16-bit access area
(SP1 stack area)
Fig. 3.3.1 Configuration of data RAM
3.4 Data ROM
The data ROM is a mask ROM for loading various static data such as a character generator, and has a
capacity of 2,048 words
× 4 bits. The data ROM is assigned to addresses 8000H to 87FFH on the data
memory map, and the data can be read using the same data memory access instructions as the RAM.
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