Description
Chip select input Serial data output Write protect input Ground Serial data input Serial clock input Hold input Power supply
2. 8-Pin TSSOP
Top view 1 2 3 4
Figure 3
8 7 6 5
Pin No.1 2 3 4 5 6 7 8
Symbol
CS
1
SO WP
1 GND SI
1 SCK
1 HOLD
1
VCC
Table 4 Description
Chip select input Serial data output Write protect input Ground Serial data input Serial clock input Hold input Power supply
3. TMSOP-8
Top view 1 2 3 4
8 7 6 5
Figure 4
1.
Features
- Packages.
- Operating voltage range Read:
2.5 V ~ 5.5 V
Write:
2.5 V ~ 5.5 V.
- Operation frequency S-25A640A:
5.0 MHz max. S-25A640B:
6.5 MHz max.
- Write time S-25A640A:
4.0 ms max. S-25A640B:
5.0 ms max.
- SPI mode (0, 0) and (1, 1).
- Page write:.
- Sequential read.
- Write protect:
Protect area:
32 bytes / page
Software, Hardware 25%, 50%, 100%.
- Monitoring of a write memory state by the status register.