參數(shù)資料
型號: MPC8541EPXAPF
廠商: Freescale Semiconductor
文件頁數(shù): 43/88頁
文件大?。?/td> 0K
描述: IC MPU POWERQUICC III 783-FCPBGA
標準包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 833MHz
電壓: 1.2V
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
配用: CWH-PPC-8540N-VE-ND - KIT EVAL SYSTEM MPC8540
MPC8541E PowerQUICC III Integrated Communications Processor Hardware Specification, Rev. 4.2
48
Freescale Semiconductor
JTAG
11 JTAG
This section describes the AC electrical specifications for the IEEE 1149.1 (JTAG) interface of the
MPC8541E.
Table 38 provides the JTAG AC timing specifications as defined in Figure 32 through Figure 35.
Table 38. JTAG AC Timing Specifications (Independent of SYSCLK) 1
At recommended operating conditions (see Table 2).
Parameter
Symbol 2
Min
Max
Unit
Notes
JTAG external clock frequency of operation
fJTG
033.3
MHz
JTAG external clock cycle time
t JTG
30
ns
JTAG external clock pulse width measured at 1.4 V
tJTKHKL
15
ns
JTAG external clock rise and fall times
tJTGR & tJTGF
02
ns
TRST assert time
tTRST
25
ns
3
Input setup times:
Boundary-scan data
TMS, TDI
tJTDVKH
tJTIVKH
4
0
ns
4
Input hold times:
Boundary-scan data
TMS, TDI
tJTDXKH
tJTIXKH
20
25
ns
4
Valid times:
Boundary-scan data
TDO
tJTKLDV
tJTKLOV
4
20
25
ns
5
Output hold times:
Boundary-scan data
TDO
tJTKLDX
tJTKLOX
ns
5
JTAG external clock to output high impedance:
Boundary-scan data
TDO
tJTKLDZ
tJTKLOZ
3
19
9
ns
5, 6
Notes:
1. All outputs are measured from the midpoint voltage of the falling/rising edge of tTCLK to the midpoint of the signal in
question. The output timings are measured at the pins. All output timings assume a purely resistive 50-
Ω load (see
Figure 31). Time-of-flight delays must be added for trace lengths, vias, and connectors in the system.
2. The symbols used for timing specifications herein follow the pattern of t(first two letters of functional block)(signal)(state)
(reference)(state) for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tJTDVKH
symbolizes JTAG device timing (JT) with respect to the time data input signals (D) reaching the valid state (V) relative to the
tJTG clock reference (K) going to the high (H) state or setup time. Also, tJTDXKH symbolizes JTAG timing (JT) with respect to
the time data input signals (D) went invalid (X) relative to the tJTG clock reference (K) going to the high (H) state. Note that,
in general, the clock reference symbol representation is based on three letters representing the clock of a particular
functional. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
3. TRST is an asynchronous level sensitive signal. The setup time is for test purposes only.
4. Non-JTAG signal input timing with respect to tTCLK.
5. Non-JTAG signal output timing with respect to tTCLK.
6. Guaranteed by design.
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MPC8541EVTALF 功能描述:微處理器 - MPU PQ 37 LITE 8555E RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
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