參數(shù)資料
型號: S1C62920D
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 1.3 MHz, MICROCONTROLLER, UUC63
封裝: DIE-63
文件頁數(shù): 7/78頁
文件大?。?/td> 874K
代理商: S1C62920D
S1C62920 TECHNICAL MANUAL
EPSON
7
CHAPTER 2: POWER SUPPLY AND INITIAL RESET
2.2.2 Watchdog timer
If the CPU runs away for some reason, the watchdog timer will detect this situation and output an initial
reset signal. See Section 4.2, "Resetting Watchdog Timer", for details.
As with the oscillation detection circuit, you should not do an initial reset at power-on using this function.
2.2.3 Internal register at initial resetting
Initial reset initializes the CPU as shown in the table below.
Table 2.2.3.1 Initial values
Program counter step
Program counter page
New page pointer
Stack pointer
Index register IX
Index register IY
Register pointer
General-purpose register A
General-purpose register B
Interrupt flag
Decimal flag
Zero flag
Carry flag
CPU core
Name
Number of bits
8
4
8
9
4
1
Setting value
00H
1H
Undefined
0
Undefined
Symbol
PCS
PCP
NPP
SP
IX
IY
RP
A
B
I
D
Z
C
RAM
Display memory
Other peripheral circuits
Peripheral circuits
Name
Number of bits
4
Setting value
Undefined
*
See Section 4.1, "Memory Map".
2.3 Test Terminal (TEST)
This terminal is used at the time of the factory inspection of the IC. During normal operation, connect the
TEST to VDD.
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