參數(shù)資料
型號(hào): TMS37122
廠商: Texas Instruments, Inc.
英文描述: TIRIS Automotive Devices Analog Front End IC TMS37122
中文描述: 提里斯汽車設(shè)備的模擬前端集成電路TMS37122
文件頁(yè)數(shù): 43/73頁(yè)
文件大?。?/td> 1189K
代理商: TMS37122
43
August ’01
Chapter 2. Electrical Description
Figure 24: Timing Diagram for Test Mode PTx04
2.10.5
Memory Read
The result of programming function is checked with Read Test Mode PTx07 (see Figure 25).
After shifting in the Test Mode (07hex), the Row and Nibble address, the Tester Unit con-
nected to TDAT must be switched to input. Fifteen TCLK pulses are needed to clock the IC
Control Unit. After nine TCLK pulses the first data bit is already available at output TDAT.
Then additional five clocks are required for the Control Unit. With the negative transition of
the next TCLK, the Tester Unit must store the first data bit. The next three data bits are shifted
with the positive transition of TCLK and should be stored by the Tester Unit at the negative
transitions.
Low at TEN resets the test circuit and TDAT becomes input again.
1
1
2 3 4 5
LSB
VBAT
TDAT
TCLK
TEN
TEST MODE
PTx04
1
2 3
DATA
LSB
ROW
LSB
NIBBLE
LSB
2 3
1 2
tPRG
tfVPP
trVPP
VBAT
VPP
6
4
4
3 1
16
WDEEN
3DTMOD4A.DRW
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