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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� PIC16C74BT-04/PQ
寤犲晢锛� Microchip Technology
鏂囦欢闋佹暩(sh霉)锛� 39/184闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MCU OTP 4KX14 A/D PWM 44-MQFP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 900
绯诲垪锛� PIC® 16C
鏍稿績铏曠悊鍣細 PIC
鑺珨灏哄锛� 8-浣�
閫熷害锛� 4MHz
閫ｉ€氭€э細 I²C锛孲PI锛孶ART/USART
澶栧湇瑷�(sh猫)鍌欙細 娆犲妾㈡脯(c猫)/寰�(f霉)浣�锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 33
绋嬪簭瀛樺劜(ch菙)鍣ㄥ閲忥細 7KB锛�4K x 14锛�
绋嬪簭瀛樺劜(ch菙)鍣ㄩ鍨嬶細 OTP
RAM 瀹归噺锛� 192 x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 4 V ~ 5.5 V
鏁�(sh霉)鎿�(j霉)杞�(zhu菐n)鎻涘櫒锛� A/D 8x8b
鎸暕鍣ㄥ瀷锛� 澶栭儴
宸ヤ綔婧害锛� 0°C ~ 70°C
灏佽/澶栨锛� 44-QFP
鍖呰锛� 甯跺嵎 (TR)
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133
SAM7S Series [DATASHEET]
6175M鈥揂TARM鈥�26-Oct-12
Lock bits can be read using Get Lock Bit command (GLB). The n
th lock bit is active when the bit n of the bit mask
is set..
20.2.5.5
Flash General-purpose NVM Commands
General-purpose NVM bits (GP NVM bits) can be set using the Set GPNVM command (SGPB). This command
also activates GP NVM bits. A bit mask is provided as argument to the command. When bit 0 of the bit mask is set,
then the first GP NVM bit is activated.
In the same way, the Clear GPNVM command (CGPB) is used to clear general-purpose NVM bits. All the general-
purpose NVM bits are also cleared by the EA command. The general-purpose NVM bit is deactivated when the
corresponding bit in the pattern value is set to 1.
General-purpose NVM bits can be read using the Get GPNVM Bit command (GGPB). The nth GP NVM bit is active
when bit n of the bit mask is set..
20.2.5.6
Flash Security Bit Command
A security bit can be set using the Set Security Bit command (SSE). Once the security bit is active, the Fast Flash
programming is disabled. No other command can be run. An event on the Erase pin can erase the security bit once
the contents of the Flash have been erased.
The SAM7S512 security bit is controlled by the EFC0. To use the Set Security Bit command, the EFC0 must be
selected using the Select EFC command
Once the security bit is set, it is not possible to access FFPI. The only way to erase the security bit is to erase the
Flash.
In order to erase the Flash, the user must perform the following:
Table 20-12. Get Lock Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
GLB
2
Read handshaking
DATA
Lock Bit Mask Status
0 = Lock bit is cleared
1 = Lock bit is set
Table 20-13. Set/Clear GP NVM Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
SGPB or CGPB
2
Write handshaking
DATA
GP NVM bit pattern value
Table 20-14. Get GP NVM Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0] or DATA[7:0]
1
Write handshaking
CMDE
GGPB
2
Read handshaking
DATA
GP NVM Bit Mask Status
0 = GP NVM bit is cleared
1 = GP NVM bit is set
Table 20-15. Set Security Bit Command
Step
Handshake Sequence
MODE[3:0]
DATA[15:0]
1
Write handshaking
CMDE
SSE
2
Write handshaking
DATA
0
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
PIC16C74BT-04/L IC MCU OTP 4KX14 A/D PWM 44PLCC
PIC16C74BT-04I/PT IC MCU OTP 4KX14 A/D PWM 44TQFP
PIC16C74BT-04I/PQ IC MCU OTP 4KX14 A/D PWM 44-MQFP
PIC16C74BT-04I/L IC MCU OTP 4KX14 A/D PWM 44PLCC
PIC16C74BT-04E/PT IC MCU OTP 4KX14 A/D PWM 44TQFP
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