1.2
Block Diagram
Figure 1.1 (a) shows a block diagram of the H8/3337 Series. Figure 1.1 (b) shows a block diagram
of the H8/3397 Series.
*
CPU
H8/300
Data bus (low)
ROM
Flash memory,
P10/A0
RAM
P90/ADTRG/IRQ2/ECS2
P91/IRQ1/EIOW
P92/IRQ0
P93/RD
P94/WR
P95/AS
P96/ø
P97/WAIT/SDA
P11/A1
P12/A2
P13/A3
P14/A4
P15/A5
P16/A6
P17/A7
H8/3337Y: 2 kbytes
H8/3336Y: 2 kbytes
H8/3334Y: 1 kbyte
PROM or mask ROM
H8/3337Y: 60 kbytes
H8/3336Y: 48 kbytes
H8/3334Y: 32 kbytes
Host
interface
Watchdog
timer
Serial communi-
cation interface
(2 channels)
P30/D0/HDB0
P31/D1/HDB1
P32/D2/HDB2
P33/D3/HDB3
P34/D4/HDB4
P35/D5/HDB5
P36/D6/HDB6
P37/D7/HDB7
P20/A8
P21/A9
16-bit
free-running
timer
I2C bus interface
(1 channel) (option)
P22/A10
P23/A11
P24/A12
P25/A13
P26/A14
P27/A15
10-bit
A/D converter
(8 channels)
8-bit timer
(2 channels)
8-bit
D/A converter
(2 channels)
P60/FTCI/KEYIN0
P61/FTOA/KEYIN1
P62/FTIA/KEYIN2
PWM timer
(2 channels)
P80/HA0
P81/GA20
P82/CS1
P83/IOR
P84/TxD1/IRQ3/IOW
P85/RxD1/IRQ4/CS2
P86/SCK1/IRQ5/SCL
P63/FTIB/KEYIN3
P64/FTIC/KEYIN4
P65/FTID/KEYIN5
P66/FTOB/IRQ6/KEYIN6
P67/IRQ7/KEYIN7
Port 4
Port 7
Port 5
Memory Sizes
ROM
RAM
H8/3337Y 60 kbytes
H8/3336Y 48 kbytes
H8/3334Y 32 kbytes
2 kbytes
2 kbytes
1 kbyte
Note: * In the case of the CP-84 and CG-84
Figure 1.1 (a) Block Diagram for H8/3337 Series
6
RENESAS [ RENESAS TECHNOLOGY CORP ]
