参数资料
型号: TS87C58X2-LCE
厂商: Atmel
文件页数: 60/62页
文件大小: 0K
描述: IC MCU 8BIT 32K OTP 30MHZ 44VQFP
标准包装: 160
系列: 87C
核心处理器: 8051
芯体尺寸: 8-位
速度: 30/20MHz
连通性: UART/USART
外围设备: POR,WDT
输入/输出数: 32
程序存储器容量: 32KB(32K x 8)
程序存储器类型: OTP
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 44-QFP
包装: 托盘
7
4431E–8051–04/06
AT/TS8xC54/8X2
MNEMONIC
PIN NUMBER
TYPE
NAME AND FUNCTION
ALE/PROG
30
33
27
O (I)
Address Latch Enable/Program Pulse: Output pulse for latching the low byte of the
address during an access to external memory. In normal operation, ALE is emitted at a
constant rate of 1/6 (1/3 in X2 mode) the oscillator frequency, and can be used for
external timing or clocking. Note that one ALE pulse is skipped during each access to
external data memory. This pin is also the program pulse input (PROG) during EPROM
programming. ALE can be disabled by setting SFR’s AUXR.0 bit. With this bit set, ALE
will be inactive during internal fetches.
PSEN
29
32
26
O
Program Store ENable: The read strobe to external program memory. When
executing code from the external program memory, PSEN is activated twice each
machine cycle, except that two PSEN activations are skipped during each access to
external data memory. PSEN is not activated during fetches from internal program
memory.
EA/V
PP
31
35
29
I
External Access Enable/Programming Supply Voltage: EA must be externally held
low to enable the device to fetch code from external program memory locations 0000H
and 3FFFH (54X2) or 7FFFH (58X2). If EA is held high, the device executes from
internal program memory unless the program counter contains an address greater
than 3FFFH (54X2) or 7FFFH (58X2). This pin also receives the 12.75V programming
supply voltage (VPP) during EPROM programming. If security level 1 is programmed,
EA will be internally latched on Reset.
XTAL1
19
21
15
I
Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL2
18
20
14
O
Crystal 2: Output from the inverting oscillator amplifier
Table 5-1.
Pin Description for 40/44 pin packages
MNEMONIC
PIN NUMBER
TYPE
Name And Function
DIL
LCC
VQFP 1.4
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