ES29LV160F Datasheet, PDF (11/71 Pages) Excel Semiconductor Inc. – 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory

ES29LV160F
Excel Semiconductor Inc.
7. Device Bus Operations
This section describes the requirements and use of the device bus operations, which are initiated
through the internal command register. The command register itself does not occupy any
addressable memory location. The register is composed of latches that store the commands, along
with the address and data information needed to execute the command. The contents of the
register serve as inputs to the internal state machine. The state machine outputs dictate the
function of the device. Table 7.1 lists the device bus operations, the inputs and control levels they
require, and the resulting output. The following subsections describe each of these operations in
further detail.
Table 7.1 ES29LV160F Device Bus Operations
Operation CE# OE# WE# RESET#
Read
Write
L
L
L
H
Standby
V_CC ±
X
0.3 V
H
H
L
H
X
V_CC ±
0.3 V
Addresses
(Note 1)
A_IN
A_IN
X
DQ0-
DQ7
D_OUT
D_IN
DQ8-DQ15
BYTE#
=V_IH
BYTE#
=V_IL
D_OUT
D_IN
DQ8-DQ14
= High-Z,
DQ15 = A-1
High-Z High-Z
High-Z
Output
Disable
L
H
H
H
Reset
X
X
X
L
X
High-Z High-Z
High-Z
X
High-Z High-Z
High-Z
Sector
Sector Address,
Protect
L
H
L
V_ID
A6=L, A1=H,
D_IN
X
X
(Note 2)
A0=L
Sector
Sector Address,
Unprotect
L
H
L
V_ID
A6 = H, A1 = H,
D_IN
X
X
(Note 2)
A0 = L
Temporary
Sector
X
X
X
V_ID
Unprotect
A_IN
D_IN
D_IN
High-Z
Legend
L = Logic Low = VIL, H = Logic High = VIH, VID = 12.0 ± 0.5 V, X = Don’t Care, A_IN = Address In,
D_IN = Data In, D_OUT = Data Out
Notes
1. Addresses are A19:A0 in word mode (BYTE# = VIH), A19:A-1 in byte mode (BYTE# = VIL).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See Sector
Protection/ Unprotection on page 18.
Rev.0A (Dec 12, 2007) 11