參數(shù)資料
型號(hào): SST89E54RC-33-C-PIE
廠商: Microchip Technology
文件頁數(shù): 13/71頁
文件大小: 0K
描述: IC MCU 8BIT 17KB FLASH 40PDIP
標(biāo)準(zhǔn)包裝: 9
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,UART/USART
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25088A
10/11
20
FlashFlex MCU
SST89E52RC / SST89E54RC
Data Sheet
A Microchip Technology Company
Symbol
Function
PWDH
Watchdog interrupt priority bit high.
Symbol
Function
EXTRAM
Internal/External RAM access
0: Internal Expanded RAM access within range of 00H to FFH using MOVX @Ri /
@DPTR. Beyond 100H, the MCU always accesses external data memory.
For details, refer to Section , “Expanded Data RAM Addressing” .
1: External data memory access.
AO
Disable/Enable ALE
0: ALE is emitted at a constant rate of 1/3 the oscillator frequency in 6 clock mode, 1/6 fOSC in
12 clock mode.
1: ALE is active only during a MOVX or MOVC instruction.
Symbol
Function
GF2
General purpose user-defined flag
DPS
DPTR registers select bit
0: DPTR0 is selected.
1: DPTR1 is selected.
Symbol
Function
SFIS0
Register used with SFIS1 to provide a feed sequence to validate writing
to WDTC and SFCM. Without a proper feed sequence, writing to SFCM will be ignored
and writing to WDTC in Watchdog mode will cause an immediate Watchdog reset.
Interrupt Priority A High (IPAH)
Location
76543210
Reset
Value
F7H
-
PWDH
------
x0xxxxxxb
Auxiliary Register (AUXR)
Location
76543210
Reset
Value
8EH
------
EXTRA
M
AO
xxxxxx10b
Auxiliary Register 1 (AUXR1)
Location
76543210
Reset
Value
A2H
-
GF2
0
-
DPS
xxxx00x0b
Sequence Register 0 (SFIS0)
Location
76543210
Reset
Value
97H
(Write only)
N/A
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