參數(shù)資料
型號： PSD4256G6V-10UIT
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 1M X 8 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80
封裝： PLASTIC, TQFP-80
文件頁數(shù)： 52/127頁
文件大?。?/td> 1091K
代理商： PSD4256G6V-10UIT
Register bit definition
PSD4256G6V
Table 25.
VM register(1)
1.
On RESET, bits 1-4 are loaded to configurations that are selected by the user in PSDsoft. Bit 0 and Bit 7
are always cleared on RESET. Bit 0-4 are active only when the device is configured in 8051 mode.
Bit definitions:
SR_code
0 = PSEN cannot access SRAM in 80C51XA modes.
1 = PSEN can access SRAM in 80C51XA modes.
Boot_Code
0 = PSEN cannot access secondary NVM in 80C51XA modes.
1 = PSEN can access secondary NVM in 80C51XA modes.
FL_Code
0 = PSEN cannot access primary Flash memory in 80C51XA modes.
1 = PSEN can access primary Flash memory in 80C51XA modes.
Boot_data
0 = RD cannot access secondary NVM in 80C51XA modes.
1 = RD can access secondary NVM in 80C51XA modes.
FL_data
0 = RD cannot access primary Flash memory in 80C51XA modes.
1 = RD can access primary Flash memory in 80C51XA modes.
Peripheral mode
0 = Peripheral mode of Port F is disabled.
1 = Peripheral mode of Port F is enabled.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Peripheral
mode
not used
(set to 0)
not used
(set to 0)
FL_data
Boot_data
FL_code
Boot_code
SR_code
Table 26.
Memory_ID0 register(1)
1.
Bit definitions:
F_size[3:0]
0h = There is no primary Flash memory
1h = Primary Flash memory size is 256 Kbit
2h = Primary Flash memory size is 512 Kbit
3h = Primary Flash memory size is 1 Mbit
4h = Primary Flash memory size is 2 Mbit
5h = Primary Flash memory size is 4 Mbit
6h = Primary Flash memory size is 8 Mbit
S_size[3:0] 0h = There is no SRAM
1h = SRAM size is 16 Kbit
2h = SRAM size is 32 Kbit
3h = SRAM size is 64 Kbit
4h = SRAM size is 128 Kbit
5h = SRAM size is 256 Kbit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
S_size 3
S_size 2
S_size 1
S_size 0
F_size 3
F_size 2
F_size 1
F_size 0
Table 27.
Memory_ID1 register(1)
1.
Bit Definitions:
F_size[3:0]
0h = There is no secondary NVM
1h = Secondary NVM size is 128 Kbit
2h = Secondary NVM size is 256 Kbit
3h = Secondary NVM size is 512 Kbit
S_size[3:0]
0h = Secondary NVM is Flash memory
1h = Secondary NVM is EEPROM
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
not used
(set to 0)
not used
(set to 0)
B_type 1
B_type 0
B_size 3
B_size 2
B_size 1
B_size 0
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