参数资料
型号: SST89V54RD2-33-C-NJE
厂商: Microchip Technology
文件页数: 17/92页
文件大小: 0K
描述: IC MCU 8BIT 24KB FLASH 44PLCC
标准包装: 26
系列: FlashFlex®
核心处理器: 8051
芯体尺寸: 8-位
速度: 33MHz
连通性: EBI/EMI,SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 36
程序存储器容量: 16KB(16K x 8)
程序存储器类型: 闪存
EEPROM 大小: 8K x 8
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 44-LCC
包装: 管件
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
24
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Symbol
Function
EXTRAM
Internal/External RAM access
0: Internal Expanded RAM access within range of 00H to 2FFH using MOVX @Ri /
@DPTR. Beyond 300H, 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.
Auxiliary Register (AUXR)
Location
76543210
Reset
Value
8EH
------
EXTRA
M
AO
xxxxxx00b
Auxiliary Register 1 (AUXR1)
Location
76543210
Reset
Value
A2H
----
GF2
0
-
DPS
xxxx00x0b
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