M29W040B; Description; Features - Hitachi 32LD8700C Service Manual

55 30 -
56 29 25
57 28 24
58 27 23
59 26 22
60 25 21
- - -
- - -
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11.17. M29W040B

11.17.1.

Description

The M29W040B is a 4 Mbit (512Kb x8) non-volatile memory that can be read, erased and
reprogrammed. These operations can be performed using a single low voltage (2.7 to 3.6V) supply. On
power-up the memory defaults to its Read mode where it can be read in the same way as a ROM or
EPROM. The M29W040B is fully backward compatible with the M29W040.The memory is divided into
blocks that can be erased independently so it is possible to preserve valid data while old data is erased.
Each block can be protected independently to prevent accidental Program or Erase commands from
modifying the memory. Program and Erase commands are writ-ten to the Command Interface of the
memory. An on-chip Program/Erase Controller simplifies the process of programming or erasing the
memory by taking care of all of the special operations that are required to update the memory contents.
The end of a program or erase operation can be detected and any error conditions identified. The
command set required to control the memory is consistent with JEDEC standards. Chip Enable, Output
Enable and Write Enable signals control the bus operation of the memory. They allow simple
connection to most microprocessors, often without additional logic.
11.17.2.

Features

• SINGLE 2.7 to 3.6V SUPPLY VOLTAGE for PROGRAM, ERASE and READ OPERATIONS
• ACCESS TIME: 55ns
• PROGRAMMING TIME
- 10μs per Byte typical8
• UNIFORM 64 Kbytes MEMORY BLOCKS
• PROGRAM/ERASE CONTROLLER
- Embedded Byte Program algorithm
- Embedded Multi-Block/Chip Erase algorithm
- Status Register Polling and Toggle Bits
• ERASE SUSPEND and RESUME MODES
- Read and Program another Block during Erase Suspend
• UNLOCK BYPASS PROGRAM COMMAND
- Faster Production/Batch Programming
• LOW POWER CONSUMPTION
- Standby and Automatic Standby
• 100,000 PROGRAM/ERASE CYCLES per BLOCK
• 20 YEARS DATA RETENTION
- Defectivity below 1 ppm/year
• ELECTRONIC SIGNATURE
- Manufacturer Code: 20h
- Device Code: E3h
TFT TV Service Manual
29 22 NC
28 21 DACM_L
27 20 DACM_R
26 19 VREF2
25 18 DACA_L
24 17 DACA_R
23 - NC
22 - NC
21 16 RESETQ
20 15 NC
19 14 NC
18 13 NC
17 12 I2S_DA_IN2
16 11 DVSS
15 - DVSS
14 - DVSS
13 10 DVSUP
12 - DVSUP
11 - DVSUP
10 9 ADR_CL
LV
OUT LV
OUT LV
OBL
OUT LV
OUT LV
LV
LV
IN OBL
LV
LV
LV
IN LV
OBL
OBL
OBL
OBL
OBL
OBL
OUT LV
20
Not connected
Loudspeaker out, left
Loudspeaker out, right
Reference ground 2
Headphone out, left
Headphone out, right
Not connected
Not connected
Power-on-reset
Not connected
Not connected
Not connected
2
I S2-data input
Digital ground
Digital ground
Digital ground
Digital power supply 5V
Digital power supply 5V
Digital power supply 5V
ADR clock