p89c669 NXP Semiconductors, p89c669 Datasheet - Page 11

• Manufacturer Part Number: p89c669
• Description: P89c669 80c51 8-bit Microcontroller Family With Extended Memory; 96 Kb Flash With 2 Kb Ram
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7. Functional description
9397 750 12299
Product data
7.1 Flash memory description
The P89C669 contains 96 kbytes of Flash program memory. It is organized as
12 separate blocks, each block containing 8 kbytes.
The P89C669 Flash memory augments EPROM functionality with in-circuit electrical
erasure and programming. The Flash can be read and written as bytes. The Chip
Erase operation will erase the entire program memory. The Block Erase function can
erase any Flash byte block. In-system programming and standard parallel
programming are both available. On-chip erase and write timing generation contribute
to a user friendly programming interface. The P89C669 Flash reliably stores memory
contents even after 10,000 erase and program cycles. The cell is designed to
optimize the erase and programming mechanisms. In addition, the combination of
advanced tunnel oxide processing and low internal electric fields for erase and
programming operations produces reliable cycling. The P89C669 uses a +5 V V
supply to perform the Program/Erase algorithms.
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Flash internal program memory with Block Erase.
Internal 4 kbytes Boot Flash, containing low-level in-system programming routines
and a default UART loader. User program can call these routines to perform
In-Application Programming (IAP). The BootFlash can be turned off to provide
access to the full 8 Mbytes memory space.
Boot vector allows user provided Flash loader code to reside anywhere in the
Flash memory space. This configuration provides flexibility to the user.
Default loader in BootFlash allows programming via the UART interface without the
need for a user provided loader.
Up to 8 Mbytes of external program memory if the internal program memory is
disabled (EA = 0).
+5 V programming and erase voltage.
Read/Programming/Erase using ISP/IAP:
Parallel programming with 87C51-like hardware interface to programmer.
Programmable security for the code in the Flash.
10,000 minimum erase/program cycles for each byte.
10 year minimum data retention.
– Byte Programming (20 s).
– Typical quick erase times (including preprogramming time):
– Block Erase (8 kbytes) in 1 second.
– Full Erase (96 kbytes) in 1 second.
Rev. 02 — 13 November 2003
80C51 8-bit microcontroller family with extended memory
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
P89C669
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