参数资料
型号: T89C51AC2-SLSIM
厂商: Atmel
文件页数: 10/121页
文件大小: 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
107
A/T89C51AC2
4127H–8051–02/08
External Data Memory
Characteristics
Table 81. Symbol Description
Table 82. AC Parameters for a Variable Clock (F = 40 MHz)
Symbol
Parameter
T
RLRH
RD Pulse Width
T
WLWH
WR Pulse Width
T
RLDV
RD to Valid Data In
T
RHDX
Data Hold After RD
T
RHDZ
Data Float After RD
T
LLDV
ALE to Valid Data In
T
AVDV
Address to Valid Data In
T
LLWL
ALE to WR or RD
T
AVWL
Address to WR or RD
T
QVWX
Data Valid to WR Transition
T
QVWH
Data set-up to WR High
T
WHQX
Data Hold After WR
T
RLAZ
RD Low to Address Float
T
WHLH
RD or WR High to ALE high
Symbol
Min
Max
Units
T
RLRH
130
ns
T
WLWH
130
ns
T
RLDV
100
ns
T
RHDX
0
ns
T
RHDZ
30
ns
T
LLDV
160
ns
T
AVDV
165
ns
T
LLWL
50
100
ns
T
AVWL
75
ns
T
QVWX
10
ns
T
QVWH
160
ns
T
WHQX
15
ns
T
RLAZ
0
ns
T
WHLH
10
40
ns
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