83C749 Philips Semiconductors, 83C749 Datasheet - Page 17

• Manufacturer Part Number: 83C749
• Description: 80C51 8-bit microcontroller family 2K/64 OTP/ROM/ 5 channel 8-bit A/D/ PWM/ low pin count
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Apr 23
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
P0.0 (ASEL)
P0.1 (PGM)
P0.2 (V
PORT 3
PORT 1
V
PP
PP
PROGRAMMING
)
/V
CLK SOURCE
RESET
XTAL1
IH
P0.2
P0.1
5V
VOLTAGE
SOURCE
PULSES
UNDEFINED
UNDEFINED
t
ADDRESS STROBE
MASEL
MIN 2 MACHINE
INVALID DATA
t
CYCLES
HASET
HIGH ADDRESS
A0–A10
VERIFY MODE
BIT 0
CONTROL
RESET
LOGIC
t
Figure 8. Entry into Program/Verify Modes
HAHLD
BIT 1
Figure 7. Programming Configuration
Figure 9. Program/Verify Cycle
LOW ADDRESS
t
ADSTA
VALID DATA
12.75V
BIT 2
BIT 3
98 s MIN
TEN BIT SERIAL CODE
t
GLGH
17
t
SHGL
BIT 4
DATA TO BE PROGRAMMED
P3.0–P3.7
P0.0/ASEL
P0.1
P0.2
XTAL1
RESET
t
DVGL
PROGRAM MODE
10 s MIN
25 PULSES
BIT 5
87C749
t
GHDX
t
GHGL
BIT 6
P1.0–P1.7
V
V
CC
SS
BIT 7
INVALID DATA
BIT 8
t
5V
AVQV
t
GHSL
+5V
83C749/87C749
VERIFY MODE
BIT 9
Preliminary specification
SU00309
DATA BUS
VALID DATA
SU00302
SU00310