S25FL004A Meet Spansion Inc., S25FL004A Datasheet - Page 14

• Manufacturer Part Number: S25FL004A
• Description: 4-megabit Cmos 3.0 Volt Flash Memory With 50 Mhz Spi Bus Interface
• Manufacturer: Meet Spansion Inc.

7.7
8. Sector Address Table
14
Hold Mode (HOLD#)
The Hold input (HOLD#) stops any serial communication with the device, but does not terminate any Write
Status Register, program or erase operation that is currently in progress.
The Hold mode starts on the falling edge of HOLD# if SCK is also low (see
use). If the falling edge of HOLD# does not occur while SCK is low, the Hold mode begins after the next falling
edge of SCK (non-standard use).
The Hold mode ends on the rising edge of HOLD# signal (standard use) if SCK is also low. If the rising edge
of HOLD# does not occur while SCK is low, the Hold mode ends on the next falling edge of CLK (non-
standard use) See
The SO output is high impedance, and the SI and SCK inputs are ignored (don’t care) for the duration of the
Hold mode.
CS# must remain low for the entire duration of the Hold mode to ensure that the device internal logic remains
unchanged. If CS# goes high while the device is in the Hold mode, the internal logic is reset. To prevent the
device from reverting to the Hold mode when device communication is resumed, HOLD# must be held high,
followed by driving CS# low.
Table 8.1
program data before the data is programmed into the memory array. Each page or byte can be individually
programmed (bits are changed from 1 to 0). The data is erased (bits are changed from 0 to 1) on a sector- or
device-wide basis using the SE or BE commands.
sector. The complete set of sectors comprises the memory array of the Flash device.
HOLD#
Each Device has
SCK
shows the size of the memory array, sectors, and pages. The device uses pages to cache the
524,288
2,048
Sector
8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
Figure
7.1.
Table 8.2 S25FL004A Sector Address Table
Table 8.1 S25FL004A Device Organization
Each Sector has
(standard use)
Condition
Figure 7.1 Hold Mode Operation
65,536
256
Hold
S25FL004A
—
D a t a
70000h
60000h
50000h
40000h
30000h
20000h
10000h
00000h
Table 8.2
S h e e t
shows the starting and ending address for each
Each Page has
Address Range
(non-standard use)
256
—
—
Condition
Hold
Figure 7.1 on page
S25FL004A_00_B3 July 9, 2007
bytes
pages
sectors
7FFFFh
6FFFFh
5FFFFh
4FFFFh
3FFFFh
2FFFFh
1FFFFh
0FFFFh
14, standard