![](/images/new-backgrounds/1105106/10510677x1.webp)
SM | Service Manual |
Microcontroller Unit
The main device on the MASTER PCB is the
This MICROCONTROLLER has a microprocessor, timer, memory, analog/ digital converter and input/output ports on one chip. Compared to a standard processor, where for each item a peripheral IC is necessary.
This MICROCONTROLLER with its
The main features of the MICROCONTROLLER are:
-24
-8
-serial communication interface system
-8 channel A/D converter
-15120 Bytes ROM (Models 4020 - 9020 and 9020/CINE)
-2 channel timer
The following block diagram shows the internal MICROCONTROLLER functions.
256 byte
EEPROM
VPP1 |
| Charge pump |
|
MC68HC05B16 (15120 bytesROM)
Model 4020 - 9020 and 9020/CINE
RESET | COP watchdog | |
IRQ | ||
| ||
OSC2 | Oscillator | |
OSC1 | ||
| ||
| ÷2 / ÷32 | |
VDD | M68C05 | |
VSS | CPU |
496bytes
self check ROM
352bytes static RAM
PORT A
PORT B
PORT C
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2/ECLK
PC3
PC4
PC5
PC6
PC7
TCMP1
PD0/AN0 PD1/AN1
PD2/AN2
PD3/AN3
PD4/AN4
PD5/AN5
PD6/AN6
PD7/AN7
VRH VRL
PORT D
A/D converter
SCI
PLM
TCMP2
TCAP1
TCAP2
RDI
SCLK
TDO
PLMA D/A PLMB D/A
figure
Kodak AG, Stuttgart | 03/98 |