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pin count. P87C749 Datasheet |
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INTEGRATED CIRCUITS
83C749/87C749
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM,
low pin count
Preliminary specification
Supersedes data of 1998 Jan 06
IC20 Data Handbook
1998 Apr 23
Philips
Semiconductors
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Philips Semiconductors
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
Preliminary specification
83C749/87C749
DESCRIPTION
The Philips 83C749/87C749 offers many of the advantages of the
80C51 architecture in a small package and at low cost.
The 8XC749 Microcontroller is fabricated with Philips high-density
CMOS technology. Philips epitaxial substrate minimizes CMOS
latch-up sensitivity.
The 8XC749 contains a 2k × 8 ROM (83C749) EPROM (87C749), a
64 × 8 RAM, 21 I/O lines, a 16-bit auto-reload counter/timer, a
fixed-priority level interrupt structure, an on-chip oscillator, a five
channel multiplexed 8-bit A/D converter, and an 8-bit PWM output.
The EPROM version of this device, the 87C749, is available in
plastic one-time programmable (OTP) packages. Once the array
has been programmed, it is functionally equivalent to the masked
ROM 83C749. Thus, unless explicitly stated otherwise, all
references made to the 83C749 apply equally to the 87C749.
The 83C749 supports two power reduction modes of operation
referred to as the idle mode and the power-down mode.
FEATURES
• Available in erasable quartz lid or One-Time Programmable plastic
packages
• 80C51 based architecture
• Small package sizes
– 28-pin DIP
– 28-pin Shrink Small Outline Package (SSOP)
– 28-pin PLCC
• Wide oscillator frequency range: 3.5MHz to 16MHz
• Low power consumption:
– Normal operation: less than 11mA @ 5V, 12MHz
– Idle mode
– Power-down mode
• 2k × 8 ROM (83C749)
EPROM (87C749)
• 64 × 8 RAM
• 16-bit auto reloadable counter/timer
• 5-channel 8-bit A/D converter
• 8-bit PWM output/timer
• 10-bit fixed-rate timer
• Boolean processor
• CMOS and TTL compatible
• Well suited for logic replacement, consumer and industrial
applications
PART NUMBER SELECTION
ROM
EPROM1
P83C749EBP N P87C749EBP N OTP
P83C749EBA A P87C749EBA A OTP
P83C749EBD DB P87C749EBD DB OTP
NOTE:
1. OTP = One Time Programmable EPROM.
TEMPERATURE RANGE °C
AND PACKAGE
0 to +70, 28-pin Plastic Dual In-line Package
0 to +70, 28-pin Plastic Leaded Chip Carrier
0 to +70, 28-pin Shrink Small Outline Package
FREQUENCY
3.5 to 16MHz
3.5 to 16MHz
3.5 to 16MHz
DRAWING
NUMBER
SOT117-2
SOT261-3
SOT341-1
1998 Apr 23
2
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Philips Semiconductors
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
Preliminary specification
83C749/87C749
BLOCK DIAGRAM
VCC
VSS
RAM ADDR
REGISTER
RAM
P0.0–P0.4
PORT 0
DRIVERS
PORT 0
LATCH
PWM
PORT 2
LATCH
ROM/
EPROM
B
REGISTER
ACC
TMP2
TMP1
STACK
POINTER
ALU
PSW
PCON
TCON
IE
TH0 TL0
RTH RTL
INTERRUPT AND
TIMER BLOCKS
RST
TIMING
AND
CONTROL
PD
OSCILLATOR
ADC
X1 X2
AVSS AVCC
PORT 1
LATCH
PORT 1
DRIVERS
P1.0–P1.7
PORT 3
LATCH
PORT 3
DRIVERS
P3.0–P3.7
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCRE-
MENTER
PROGRAM
COUNTER
DPTR
SU00305
1998 Apr 23
3
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