The Built-in rechargeable battery in PRS-500 LIS1356HNPAQ (LITHIUM ION STORAGE BATTERY ASSY) is DC IN 3.7 V, and its code (for original battery replacement from Sony for $82.12 at servicesales.sel.sony.com) is X-2149-315-1. This partnumber does not appear on the battery itself, only in the Service Manual. A replacement (size and mAh) should be indicated by someone, as original parts are too expensive. This battery is probably 850mAh as indicated here
http://www.pricerunner.fr/f/462/Acce...a_marques=sony.
The Battery is not connected to the main CPU but to a power control IC (a SN412005RHLR - the Sony IC responsible for supplying energy to the board, charging the battery, managing USB and AC power and Thermal Shutdown).
The PRS-500 runs with two CPUs (a Sub-CPU and a Main-CPU).
The Sub-CPU is HD64338002A21FPV - a Renesas 8-Bit Single-Chip Microcomputer
H8 Family / H8/300L Super Low Power Series - Mask ROM version H8/38002 Model HD64338002 on-chip memory ROM 16 kbytes RAM 1 kbyte - datasheet at
http://datasheet.digchip.com/192/192...HCD6433800.pdf.
(Someone has a dump of this ROM?)
The Main-CPU is MC9328MXLVP20R2 - a Freescale Semiconductor i.MX Family applications processor with an ARM920T™ core that operates at 200 MHz. Integrated modules include a USB device, an LCD controller, and an MMC/SD host controller.
datasheet at
http://www.freescale.com/files/32bit.../MC9328MXL.pdf
(There should be no ROM here)
In terms of internal memory the unit has 2x modules of 64MB SDRAMs (volatile memory for variables and program execution), 1x module of 2MB ROM (main bootloader/"bios" is probably here) and 1x module of 128MB ROM (where the "operational system" and books should be). So, when people say the PRS-500 has 64MB of free space for books they are considering what is left after applications.
Main ICs are:
2x K4M561633G-BN75T - SDRAM 64MB (connected to Main CPU)
S29AL016D90TFI020H-PRS01 - MOR-Flash ROM 2MB - Spansion 16 Megabit Flash Memory manufactured using 200 nm process technology, 3.0 Volt-only Read, Program, and Erase, 90 ns Access Speed, VCC = 2.7 - 3.6V, bottom boot sector device, 2,097,152 bytes (connected to Main CPU) -
http://www.spansion.com/datasheets/s...4_e%5B1%5D.pdf
(Someone has a dump of this ROM?)
K9F1G08U0A-PCB0T NAND-Flash Rom 128MB (connected to Main CPU)
128M x 8 Bit NAND Flash Memory - 3.3V device: 2.7 V ~3.6 V, 1G bit with spare 32M bit capacity, 30ns cycle time per byte. Used for large nonvolatile storage applications such as solid state file storage and other portable applications requiring non-volatility.
(Someone has a dump of this Flash Memory? Procedures to restore factory settings should be changing this memory)
AK4365VN-L Audio DAC (connected to Main CPU)
R5C807 SD I/F Controller (connected to Main CPU)
CXD3452GA MS I/F Controller (connected to Main CPU)
APOLLO1-18 Ink Indicator Controller (connected to Main CPU)
S29AL004D90BFI010E-LUT-01 Flash Rom 512KB (connected to Indicator)
2x LY62L12816GL-55LL3 SRAM 1MB (connected to Indicator)
----
To Enter TEST MODE one should insert a memory stick with the following files:
autorun.xml,
icon.png,
key.png,
lut.bin
---
A change of the LUT (Look Up Table) is required when a INK INDICATOR ELEMENT, MAIN BOARD and FLASH ROM (IC1611) are replaced.
Vcom Voltage Adjustment - Vcom voltage for the display panel varies for each panel. Vcom adjustment is required when replacing a board or panel. To Adjust observe the negative side of C1666 on an oscilloscope, and use RV1601 to adjust the voltage that is generated when the screen is changed so that it satisfies the standard (oscilloscope at 500mV/DIV, 400 ms/DIV, must generate 1.3Vp-p between low and high).