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 Jul 18
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
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.
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
(this data sheet)
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
PART ORDER
NUMBER
1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
P89C51RA2BA/01
P89C51RA2BBD/01
P89C51RB2BA/01
P89C51RB2BBD/01
P89C51RC2BN/01
P89C51RC2BA/01
P89C51RC2FA/01
P89C51RC2BBD/01
P89C51RC2FBD/01
P89C51RD2BN/01
P89C51RD2BA/01
P89C51RD2BBD/01
P89C51RD2FA/01
MEMORY
FLASH
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
RAM
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
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
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
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 #
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
NOTE:
1. The Part Marking will not include the “/01”.
2002 Jul 18
3
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