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Flash microcontroller. P89C668 Datasheet |
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INTEGRATED CIRCUITS
P89C668
80C51 8-bit Flash microcontroller family
64KB ISP FLASH with 8KB RAM
Preliminary data
Supersedes data of 2001 Jul 19
IC28 Data Handbook
2001 Jul 27
Philips
Semiconductors
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Philips Semiconductors
80C51 8-bit Flash microcontroller family
64KB ISP Flash with 8KB RAM
Preliminary data
P89C668
DESCRIPTION
The P89C668 device contains a non-volatile 64 kbytes Flash
program memory that is both parallel programmable and serial
In-System Programmable. In-System Programming allows devices
to alter their own program memory, in the actual end product, under
software control. This opens up a range of applications that can
include the ability to field update the application firmware.
A default serial loader (boot loader) program in ROM allows serial
In-System programming of the Flash memory without the need for a
loader in the Flash code. User programs may erase and reprogram
the Flash memory at will through the use of standard routines
contained in ROM.
This device is a Single-Chip 8-Bit Microcontroller manufactured in
advanced CMOS process and is a derivative of the 80C51
microcontroller family. The device has the same instruction set as
the 80C51.
The device also has four 8-bit I/O ports, three 16-bit timer/event
counters, a multi-source, four-priority-level, nested interrupt structure,
an enhanced UART and on-chip oscillator and timing circuits.
The added features of the P89C668 makes it a powerful microcontroller
for applications that require pulse width modulation, high-speed I/O and
up/down counting capabilities such as motor control.
FEATURES
• 80C51 Central Processing Unit
• On-chip Flash Program Memory with In-System Programming
(ISP) capability
• Boot ROM contains low level Flash programming routines for
downloading via the UART
• Can be programmed by the end-user application (IAP)
• Parallel programmed with 87C51 compatible hardware interface to
programmer
• Speed up to 20 MHz with 6 clock cycles per machine cycle
(40 MHz equivalent performance); up to 33 MHz with 12 clocks
• Full static operation
• RAM expandable externally to 64 kbytes
• 4 level priority interrupt
• 8 interrupt sources
• Four 8-bit I/O ports
• Full-duplex enhanced UART
– Framing error detection
– Automatic address recognition
• Power control modes
– Clock can be stopped and resumed
– Idle mode
– Power down mode
• Programmable clock out
• Second DPTR register
• Asynchronous port reset
• Low EMI (inhibit ALE)
• I2C serial interface
• Programmable Counter Array (PCA)
– PWM
– Capture/compare
ORDERING INFORMATION
MEMORY SIZE
64K × 8
MEMORY
FLASH
RAM
P89C668HBA
P89C668HFA
P89C668HBBD
64 KB
64 KB
64 KB
8 KB
8 KB
8 KB
TEMPERATURE
RANGE °C
AND PACKAGE
0 to +70, PLCC
–40 to +85, PLCC
0 to +70, LQFP
VOLTAGE
RANGE
4.5 to 5.5 V
4.5 to 5.5 V
4.5 to 5.5 V
FREQ. (MHz)
6 CLOCK
MODE
12 CLOCK
MODE
0 to 20 MHz 0 to 33 MHz
0 to 20 MHz 0 to 33 MHz
0 to 20 MHz 0 to 33 MHz
DWG. #
SOT187-2
SOT187-2
SOT389-1
2001 Jul 27
2
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Philips Semiconductors
80C51 8-bit Flash microcontroller family
64KB ISP Flash with 8KB RAM
Preliminary data
P89C668
BLOCK DIAGRAM
VCC
VSS
RAM ADDR
REGISTER
RAM
P0.0–P0.7
PORT 0
DRIVERS
PORT 0
LATCH
P2.0–P2.7
PORT 2
DRIVERS
PORT 2
LATCH
FLASH
B
REGISTER
ACC
TMP2
TMP1
STACK
POINTER
8
PROGRAM
ADDRESS
REGISTER
PSEN
ALE
EAVPP
RST
TIMING
AND
CONTROL
PD
OSCILLATOR
XTAL1
XTAL2
ALU
PSW
PORT 1
LATCH
I2C
PORT 1
DRIVERS
P1.0–P1.7
SCL
SDA
SFRs
TIMERS
P.C.A.
PORT 3
LATCH
BUFFER
PC
INCRE-
MENTER
8
PROGRAM
COUNTER
DPTR’S
MULTIPLE
PORT 3
DRIVERS
P3.0–P3.7
16
su01089
2001 Jul 27
3
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