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參數(shù)資料
| 型號(hào)： | SST89E52RC-33-C-NJE |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-018AC, LCC-44 |
| 文件頁數(shù)： | 56/57頁 |
| 文件大?。?/td> | 652K |
| 代理商： | SST89E52RC-33-C-NJE |
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8
Data Sheet
FlashFlex MCU
SST89E52RC / SST89E54RC
2007 Silicon Storage Technology, Inc.
S71259-04-000
1/07
PSEN#
I/O
Program Store Enable: PSEN# is the Read strobe to external program. When the device is
executing from internal program memory, PSEN# is inactive (High). When the device is exe-
cuting code from external program memory, PSEN# is activated twice each machine cycle,
except that two PSEN# activations are skipped during each access to external data memory.
A forced high-to-low input transition on the PSEN# pin while the RST input is continually held
high for more than 10 machine cycles will cause the device to enter external host mode pro-
gramming.
RST
I
Reset: While the oscillator is running, a “high” logic state on this pin for two machine cycles
will reset the device. If the PSEN# pin is driven by a high-to-low input transition while the RST
input pin is held “high,” the device will enter the external host mode, otherwise the device will
enter the normal operation mode.
EA#
I
External Access Enable: EA# must be connected to VSS in order to enable the device to
fetch code from the external program memory. EA# must be strapped to VDD for internal pro-
gram execution. However, Disable-Extern-Boot (See Section 8.0, “Security Lock”) will disable
EA#, and program execution is only possible from internal program memory. The EA# pin can
ALE/PROG#
I/O
Address Latch Enable: ALE is the output signal for latching the low byte of the address dur-
ing an access to external memory. This pin is also the programming pulse input (PROG#) for
flash programming. Normally the ALE3 is emitted at a constant rate of 1/6 the crystal fre-
quency4 and can be used for external timing and clocking. One ALE pulse is skipped during
each access to external data memory. However, if AO is set to 1, ALE is disabled.
NC
I/O
No Connect
XTAL1
I
Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock generator
circuits.
XTAL2
O
Crystal 2: Output from the inverting oscillator amplifier.
VDD
I
Power Supply
VSS
I
Ground
T2-1.0 1259
1. I = Input; O = Output
2. It is not necessary to receive a 12V programming supply voltage during flash programming.
3.ALE loading issue: When ALE pin experiences higher loading (>30pf) during the reset, the MCU may accidentally enter into modes
other than normal working mode. The solution is to add a pull-up resistor of 3-50 K
Ω to V
DD, e.g. for ALE pin.
4. For 6 clock mode, ALE is emitted at 1/3 of crystal frequency.
TABLE
2-1: Pin Descriptions (Continued) (2 of 2)
Symbol
Type1
Name and Functions
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SST89E52RC-33-C-PIE | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40 |
| SST89V516RD-33-I-PIE | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40 |
| SST89V516RD-33-C-PI | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40 |
| SST89V516RD-33-I-PIE | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40 |
| SST89E516RD-40-I-PIE | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SST89E52RC-33-C-PIE | 功能描述:8位微控制器 -MCU 8-Bit 8K+1K Flash 33MHz 3/16-Bit Timer RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| SST89E52RD2 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:8 bit 8051-Compatibale Microcontroller (MCU) with Embedded SuperFlash Memory |
| SST89E52RD2/RD | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89E52RD2_06 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89E52RD2-33-C-NI | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
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