M38C29T-ADF Renesas Electronics America, M38C29T-ADF Datasheet - Page 9

• Manufacturer Part Number: M38C29T-ADF
• Description: DEV TEMPORARY TARGET BOARD FOR M
• Manufacturer: Renesas Electronics America

Specifications of M38C29T-ADF

• Accessory Type: Target Board
• For Use With/related Products: M38C29RLFS
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6. Reset Circuit
Figure 6.1 shows the reset circuit and its waveform. In this product, reset is cleared in about 100ms from the instant Vcc passes about
2.1V after having started from 0 V. When Vcc drops down to about 2.1V, reset turns effective.
Figure 6.1 Reset circuit and its waveform
By using SW5, the MCU can be reset manually.
Table 6.1 Function of SW5 (reset switch)
No.
SW5
Approx. 1. 25 x ( R3 + R4 ) / R4
Detected power voltage ( V )
Name
RESET
Input volage
( IC3- 2-pin ）
( IC3 - 5-pin ）
Output state
1 .25V
Function
This is the reset switch. Press down this switch to reset the MCU.
H
L
R 3
6. 8 K
R 4
10 K
2
IN
td
3
t d = 0 . 34 x CD (pF ) usec
Vss
M5195 7BL
(7/8)
Vcc
0. 33u F
C 5
1
Vcc
4
I C3
CD
OUT
ＣＤ
5
t d
SW4
1 0K
R 5
TP3
RESET
MCU RESET
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