83C754 Philips Semiconductors, 83C754 Datasheet - Page 8

• Manufacturer Part Number: 83C754
• Description: 80C51 8-bit microcontroller family 4K/256 OTP/ROM/ DAC/ comparator/ UART/ reference
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Apr 23
*ENABLED/DISABLED BY AC0
*PINS LISTED AS OPEN DRAIN WILL NOT HAVE THIS PULLUP
80C51 8-bit microcontroller family
4K/256 OTP/ROM, DAC, comparator, UART, reference
WRITE TO
INT. BUS
LATCH
LATCH
READ
READ
Figure 4. Typical Port Bit Latches and I/O Buffers
PIN
CL
D
LATCH
ALTERNATE INPUT
XYDACBIAS
XYSOURCE
DECOUPLE
FUNCTION
XYZRAMP
Q
Q
XYDAC
VREG
ZDAC
AV
ALTERNATE
FUNCTION
ZIN
YIN
XIN
OUTPUT
CC
1K
ANALOG
V
MUX
DD
INTERNAL*
PULL-UP
Figure 3. Analog Section
AC6
AC2
AC3
AC4
AC5
SU00671
MUX0
MUX1
MUX2
PIN
AC1
8
DCON 7:0 (84H)
BANDGAP REF
BANDGAP REF*
20K
EXT
83C754/87C754
10K
Preliminary specification
AC7
TO PCA TRIGGER
SU00765A