83C145 Datasheet, PDF (4/40 Pages) NXP Semiconductors – Microcontrollers for TV and video MTV

Philips Semiconductors
Microcontrollers for TV and video (MTV)
5 BLOCK DIAGRAM
Product specification
83C145; 83C845
83C055; 87C055
handbook, full pagewidth
T0
INT1 INT0
VDD
XTAL1
(IN)
XTAL2
(OUT)
8-BIT
TIMER /
EVENT
COUNTER
CPU
BF VID1 VCTRL VCLK1 _HSYNC
VID2 ^VID0 _VCLK2 VSYNC
ROM
(1)
RAM
256 bytes
OSD BLOCK
DISPLAY
RAM
128 × 10
CHARACTER
GENERATOR
ROM
60 × 18 × 14
8-bit internal bus
RST
VSS
80C51
core
excluding
ROM / RAM
PARALLEL
I/O
PORTS
8 x 6-BIT PWM
14-BIT
PWM
SOFTWARE
CONTROL
ADC
884 8
8
P3 P2 P1 P0 PWM0 to PWM7
TDAC
3
MBE766
ADI2 to ADI0
(1) ROM sizes: see Table 1.
5.1 Part options
Table 1 Differences between the types
MEMORY
ROM
EPROM (OTP)
83C845
8 kbytes
−
Fig.1 Block diagram.
83C145
12 kbytes
−
TYPES
83C055
16 kbytes
−
87C055
−
16 kbytes
1996 Mar 22
4