Philips Semiconductors
Preliminary data
80C51 8-bit Flash microcontroller family
8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM
P89C51RA2/RB2/RC2/RD2xx
DESCRIPTION
The P89C51RA2/RB2/RC2/RD2xx contains a non-volatile
8KB/16KB/32KB/64KB Flash program memory that is both parallel
programmable and serial In-System and In-Application
Programmable. In-System Programming (ISP) allows the user to
download new code while the microcontroller sits in the application.
In-Application Programming (IAP) means that the microcontroller
fetches new program code and reprograms itself while in the
system. This allows for remote programming over a modem link.
A default serial loader (boot loader) program in ROM allows serial
In-System programming of the Flash memory via the UART without
the need for a loader in the Flash code. For In-Application
Programming, the user program erases and reprograms the Flash
memory by use of standard routines contained in ROM.
The device supports 6-clock/12-clock mode selection by
programming a Flash bit using parallel programming or
In-System Programming. In addition, an SFR bit (X2) in the clock
control register (CKCON) also selects between 6-clock/12-clock
mode.
Additionally, when in 6-clock mode, peripherals may use either 6
clocks per machine cycle or 12 clocks per machine cycle. This
choice is available individually for each peripheral and is selected by
bits in the CKCON register.
This device is a Single-Chip 8-Bit Microcontroller manufactured in an
advanced CMOS process and is a derivative of the 80C51
microcontroller family. The instruction set is 100% compatible with
the 80C51 instruction set.
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 P89C51RA2/RB2/RC2/RD2xx make 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) and In-Application Programming (IAP) capability
•
Boot ROM contains low level Flash programming routines for
downloading via the UART
•
Can be programmed by the end-user application (IAP)
•
Parallel programming with 87C51 compatible hardware interface
to programmer
•
Supports 6-clock/12-clock mode via parallel programmer (default
clock mode after ChipErase is 12-clock)
•
6-clock/12-clock mode Flash bit erasable and programmable via
ISP
•
6-clock/12-clock mode programmable “on-the-fly” by SFR bit
•
Peripherals (PCA, timers, UART) may use either 6-clock or
12-clock mode while the CPU is in 6-clock mode
•
Speed up to 20 MHz with 6-clock cycles per machine cycle
(40 MHz equivalent performance); up to 33 MHz with 12 clocks
per machine cycle
•
Fully static operation
•
RAM expandable externally to 64 kbytes
•
Four interrupt priority levels
•
Seven 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 pin
•
Second DPTR register
•
Asynchronous port reset
•
Low EMI (inhibit ALE)
•
Programmable Counter Array (PCA)
–
PWM
–
Capture/compare
2002 May 20
2
Philips Semiconductors
Preliminary data
80C51 8-bit Flash microcontroller family
8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM
P89C51RA2/RB2/RC2/RD2xx
SELECTION TABLE
Type
Memory
# of Timers
Timers
Serial
Interfaces
Default Clock
Rate
1
ADC bits/ch.
Interrupts
(Ext.)/Levels
Reset active
low/high?
Optional
Clock Rate
1
Max.
Freq.
at 6-clk
/ 12-clk
(MHz)
20/33
20/33
20/33
20/33
Freq.
Range
at 3V
(MHz)
–
–
–
–
Freq.
Range
at
5V
(MHz)
0-20/33
0-20/33
0-20/33
0-20/33
P89C51RD2xx
2
P89C51RC2xx
P89C51RB2xx
P89C51RA2xx
1K
512B
512B
512B
–
–
–
–
–
–
–
–
64K
32K
16K
8K
4
4
4
4
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
32
32
32
32
7(2)/4
7(2)/4
7(2)/4
7(2)/4
Program
Security
√
√
√
√
I/O Pins
UART
Flash
PWM
ROM
RAM
CAN
OTP
PCA
WD
I
2
C
SPI
12-clk
12-clk
12-clk
12-clk
6-clk
6-clk
6-clk
6-clk
H
H
H
H
NOTE:
1. P89C51Rx2Hxx devices have a 6-clk default clock rate (12-clk optional). Please also see Device Comparison Table.
2. P89C51RD2xx will be released shortly.
DEVICE COMPARISON TABLE
Item
Type description
Programming algo-
rithm
Clock mode (I)
1st generation of Rx2 devices
P89C51Rx2Hxx(x)
When using a parallel programmer,
be sure to select
P89C51Rx2Hxx(x) devices
6-clk default, OTP
configuration bit
to program to
12-clk
mode using
parallel programmer (cannot be
programmed back to 6-clk)
N/A
N/A
Two 8-Kbyte blocks
1–3 16-Kbyte blocks
2nd generation of Rx2 devices
P89C51Rx2xx(x)
When using a parallel programmer, be
sure to select P89C51Rx2xx(x) de-
vices (no more letter ‘H’)
12-clk default, Flash
configuration bit
to program to
6-clk
mode using paral-
lel programmer or ISP (can be repro-
grammed)
6-clock/12-clock mode programmable
“on the fly” by SFR bit X2 (CKCON.0)
Peripherals can be run in 12-clk mode
while CPU runs in 6-clk mode
2–16 4-Kbyte blocks
Difference
No more letter ‘H’
Different programming algorithm
due to process change
More flexibility for the end user,
more compatibility to older
P89C51Rx+ parts
Clock mode can be changed by
software
More flexibility, lower power con-
sumption
More flexibility
Clock mode (II)
Peripheral clock
modes
Flash block structure
ORDERING INFORMATION
PHILIPS
(EXCEPT NORTH
AMERICA)
PART ORDER
NUMBER
PART MARKING
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
P89C51RA2BA
P89C51RA2BBD
P89C51RB2BA
P89C51RB2BBD
P89C51RC2BN
P89C51RC2BA
P89C51RC2FA
P89C51RC2BBD
P89C51RC2FBD
P89C51RD2BN
P89C51RD2BA
P89C51RD2BBD
P89C51RD2FA
MEMORY
FLASH
RAM
TEMPERATURE
RANGE (°C)
AND PACKAGE
0 to +70, PLCC
0 to +70, LQFP
0 to +70, PLCC
0 to +70, LQFP
0 to +70, PDIP
0 to +70, PLCC
–40 to +85, PLCC
0 to +70, LQFP
–40 to +85, LQFP
0 to +70, PDIP
0 to +70, PLCC
0 to +70, LQFP
–40 to +85, PLCC
VOLTAGE
RANGE
FREQUENCY (MHz)
6-CLOCK
MODE
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
0 to 20 MHz
12-CLOCK
MODE
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
0 to 33 MHz
DWG #
8 KB
8 KB
16 KB
16 KB
32 KB
32 KB
32 KB
32 KB
32 KB
64 KB
64 KB
64 KB
64 KB
512 B
512 B
512 B
512 B
512 B
512 B
512 B
512 B
512 B
1024 B
1024 B
1024 B
1024 B
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
4.5–5.5 V
SOT187-2
SOT389-1
SOT187-2
SOT389-1
SOT129-1
SOT187-2
SOT187-2
SOT389-1
SOT389-1
SOT129-1
SOT187-2
SOT389-1
SOT187-2
2002 May 20
3