参数资料
型号: STP2200ABGA-100
元件分类: 存储控制器/管理单元
英文描述: 256M X 8, DRAM CONTROLLER, PBGA225
封装: PLASTIC, BGA-225
文件页数: 3/36页
文件大小: 433K
代理商: STP2200ABGA-100
11
Uniprocessor System Controller
USC
STP2200ABGA
July 1997
AC CHARACTERISTICS
Nearly all inputs and outputs are registered and are referenced to the PECL differential input clock (CLK+
and CLK–). This clock input controls an on-board PLL. These signals are clocked by the rising edge of CLK+
at the crossover between CLK+ and CLK– (where both signals are at the same voltage). All inputs are applied
with a rise and fall time of 1.0 nanosecond (ns).
The JTAG signals, are referenced to JTAG_TCK. They are asynchronous signals with respect to CLK+/CLK–.
The following signals are asynchronous to CLK + and CLK – and the JTAG clock. They include resets and the
EBus Interface signals:
EBUS_ADDR[2:0]
EBUS_CS
EBUS_RD
EBUS_WR
EBUS_DATA[7:0]
P_RESET
X_RESET
SYS_RESET
JTAG_TRST
AC Characteristics, UPA_CLK+ / UPA_CLK –
Parameter
Signal Name
Condition
-83
-100
Units
Min
Max
Min
Max
tCYCLE
CLK+ /CLK–
40.0
83.3
40
100.0
MHz
tWH
CLK+ /CLK–
5.4
4.4
ns
tWL
CLK+ /CLK–
5.4
4.4
ns
tE
CLK+ /CLK–
Rising
600
ps
tE
CLK– /CLK–
Falling
600
ps
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