參數(shù)資料
型號(hào)： UPD78324
廠商： NEC Corp.
英文描述： 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述： 16/8-BIT單片機(jī)
文件頁數(shù)： 47/86頁
文件大小： 454K
代理商： UPD78324
47
μ
PD78323, 78324
6.
EXTERNAL DEVICE EXPANSION FUNCTION
The
μ
PD78324 can expand external devices (data memory, program memory peripheral device) for areas (8000H to
FAFFH) except the internal ROM and RAM areas. Table 6-1 and 6-2 show the pin used for external device access and the
pin function setting procedure.
Table 6-1. Pin Function Setting (
μ
PD78324)
Memory Expansion
Mode Register
MM0 to MM2
MM7
Fetch Cycle
Control
Register
00H
00H
Except 00H
EA Pin
1
Remarks
0
1
0
1
Port mode
Expansion
mode
General port
Setting prohibited
AD0 to AD7
RD
WR
External device
connection mode
μ
PD71P301
connection mode
Set to A8 to
A15 in steps
General port
TAS
TMD
Pin Function
P40 to P47
P50 to P57
P90
P91
P92
P93
P50 to P57 pins according to the externally expanded memory size. The memory can be expanded in steps from 256
bytes to about 32K bytes. The pins which are not used as the address bus can be used as the general-purpose input/output
port.
Table 6-2. Port and Address Setting for Port 5 (
μ
PD78324)
P57
P56
P55
P54
P53
P52
P51
P50
External Address Space
Port
Port
Port
Port
Port
Port
Port
Port
256 bytes or less
Port
Port
Port
Port
A11
A10
A9
A8
4K bytes or less
Port
Port
A13
A12
A11
A10
A9
A8
16K bytes or less
A15
A14
A13
A12
A11
A10
A9
A8
About 32K bytes or less
Table 6-3. Pin Function Setting (
μ
PD78323)
AD0 to AD7
A8 to A15
RD
WR
Memory Expansion
Mode Register
MM7
Fetch Cycle
Control
Register
00H
Except 00H
EA Pin
ASTB
1
Remarks
––
0
1
External device
connection mode
μ
PD71P301
connection mode
General port
TAS
TMD
Pin Function
AD0 to AD7
A8 to A15
RD
WR
P92
P93
μ
PD78324
emulation mode
TAS
TMD
相關(guān)PDF資料
PDF描述
UPD784217AY 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784217AYGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784217AGC 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784217AGF 16-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784215AGC 16-BIT SINGLE-CHIP MICROCONTROLLERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD78365AGF3B9 制造商: 功能描述: 制造商:undefined 功能描述:
UPD784031GC-8BT-A 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT/16BIT 78K4 CISC ROMLESS 3.3V/5V 80PQFP - Trays 制造商:Renesas Electronics 功能描述:16 制造商:Renesas Electronics 功能描述:16 Cut Tape
UPD784031GK-9EU-A 制造商:Renesas Electronics Corporation 功能描述:16BIT K4 ROMLESS - Bulk
UPD784031YGC-8BT 制造商:Renesas Electronics Corporation 功能描述:
UPD784031YGC-8BT-A 制造商:Renesas Electronics Corporation 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*