参数资料
型号: AT80251G2D-SLSUM
厂商: Atmel
文件页数: 54/77页
文件大小: 0K
描述: IC 8051 MCU ROMLESS 44PLCC
标准包装: 972
系列: 8x251
核心处理器: C251
芯体尺寸: 8/16-位
速度: 24MHz
连通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
58
AT/TSC8x251G2D
4135F–8051–11/06
Figure 21.
SPI Slave Waveforms (SSCPHA = 0)
Note:
1. Not Defined but generally the LSB of the character which has just been received.
Figure 22.
SPI Slave Waveforms (SSCPHA = 1)
AC Characteristics - EPROM Programming and Verifying
Definition of Symbols
Table 50.
EPROM Programming and Verifying Timing Symbol Definitions
TSLCL
TSLCH
T
CHCL
TCLCH
MOSI
(input)
SCK
(SSCPOL = 0)
(input)
SS#
(input)
SCK
(SSCPOL = 1)
(input)
MISO
(output)
TCHCH
TCLCX
TCHCX
TIVCL TCLIX
TCHIX
TIVCH
TCHOV
TCLOV
TCHOX
TCLOX
MSB IN
BIT 6
LSB IN
SLAVE MSB OUT
SLAVE LSB OUT
BIT 6
TSLOV
(1)
TSHOX
TSHSL
TCHSH
TCLSH
TCHCL
TCLCH
MOSI
(input)
SCK
(SSCPOL = 0)
(input)
SS#
(input)
SCK
(SSCPOL = 1)
(input)
MISO
(output)
TCHCH
TCLCX
TCHCX
TIVCL TCLIX
TCHIX
TIVCH
TCLOV
TCHOV
TCLOX
TCHOX
MSB IN
BIT 6
LSB IN
SLAVE MSB OUT
SLAVE LSB OUT
BIT 6
TSLOV
(1)
TSHOX
TSHSL
TCHSH
TCLSH
TSLCL
TSLCH
Signals
Conditions
A
Address
H
High
E
Enable: mode set on Port 0
L
Low
G
Program
V
Valid
Q
Data Out
X
No Longer Valid
S
Supply (VPP)
Z
Floating
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