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| 型號(hào)： | MD80C52EXXX-12SHXXX |
| 廠商： | TEMIC SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CDIP40 |
| 文件頁數(shù)： | 228/586頁 |
| 文件大?。?/td> | 25028K |
| 代理商： | MD80C52EXXX-12SHXXX |
303
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
,
Table 27-9.
Pin name mapping.
Signal name in
programming mode
Pin name
I/O
Function
RDY/BSY
PD1
O
0: Device is busy programming, 1: Device is ready for
new command.
OE
PD2
I
Output Enable (Active low).
WR
PD3
I
Write Pulse (Active low).
BS1
PD4
I
Byte Select 1.
XA0
PD5
I
XTAL Action Bit 0
XA1
PD6
I
XTAL Action Bit 1
PAGEL
PD7
I
Program Memory and EEPROM data Page Load.
BS2
PA0
I
Byte Select 2.
DATA
PB7-0
I/O
Bi-directional Data bus (Output when OE is low).
Table 27-10. BS2 and BS1 encoding.
BS2
BS1
Flash / EEPROM
address
Flash data
loading / reading
Fuse
programming
Reading fuse
and lock bits
0
Low Byte
Fuse Low Byte
0
1
High Byte
Lockbits
10
Extended High
Byte
Reserved
Extended Byte
Extended Fuse
Byte
1
Reserved
Fuse High Byte
Table 27-11. Pin values used to enter Programming mode.
Pin
Symbol
Value
PAGEL
Prog_enable[3]
0
XA1
Prog_enable[2]
0
XA0
Prog_enable[1]
0
BS1
Prog_enable[0]
0
Table 27-12. XA1 and XA0 enoding.
XA1
XA0
Action when XTAL1 is pulsed
00
Load Flash or EEPROM Address (High or low address byte determined
by BS2 and BS1)
0
1
Load Data (High or Low data byte for Flash determined by BS1)
1
0
Load Command
1
No Action, Idle
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